diff --git a/bower.json b/bower.json
index fe86230..47d1c0f 100644
--- a/bower.json
+++ b/bower.json
@@ -1,6 +1,6 @@
 {
   "name": "kairos",
-  "version": "1.0.0",
+  "version": "1.1.0",
   "description": "A non date-based time calculator",
   "homepage": "https://github.com/kairos",
   "repository": {
diff --git a/build/kairos-debug.js b/build/kairos-debug.js
index a5d9c3b..2a32edc 100644
--- a/build/kairos-debug.js
+++ b/build/kairos-debug.js
@@ -1,7 +1,7 @@
 /**
  * Kairos.js - A non date-based time calculator
  * @author Rodrigo Gomes da Silva <rodrigo.smscom@gmail.com>
- * @version v1.0.0
+ * @version v1.1.0
  * @link https://github.com/kairos
  * @license BSD-2-Clause
  */
@@ -51,7 +51,17 @@
     var regex = /^[+-]?\d+(?::?\d{1,2}(?::\d{1,2}(?::\d{1,3})?)?)?$/;
     return regex.test(expression);
   };
-  
+
+  /**
+   * Return a Kairos.Gnomon instance.
+   * 
+   * @param {String|Number} expression Time expression
+   * @returns {Kairos.Gnomon}
+   */
+  Kairos.with = function (expression) {
+    return new Kairos.Gnomon(expression);
+  };
+
   /**
    * Sums augend time with addend time
    *
@@ -62,10 +72,7 @@
    * @returns {String}
    */
   Kairos.plus = function (augend, addend) {
-    var a = new Kairos.Gnomon(augend);
-    var b = new Kairos.Gnomon(addend);
-    a.plus(b);
-    return a.toExpression();
+    return Kairos.with(augend).plus(addend).toExpression();
   };
 
   /**
@@ -78,10 +85,7 @@
    * @returns {String}
    */
   Kairos.minus = function (minuend, subtrahend) {
-    var a = new Kairos.Gnomon(minuend);
-    var b = new Kairos.Gnomon(subtrahend);
-    a.minus(b);
-    return a.toExpression();
+    return Kairos.with(minuend).minus(subtrahend).toExpression();
   };
 
   /**
@@ -94,9 +98,7 @@
    * @returns {String}
    */
   Kairos.multiply = function (multiplier, multiplicand) {
-    var m = new Kairos.Gnomon(multiplier);
-    m.multiply(multiplicand);
-    return m.toExpression();
+    return Kairos.with(multiplier).multiply(multiplicand).toExpression();
   };
 
   /**
@@ -109,11 +111,9 @@
    * @returns {String}
    */
   Kairos.divide = function (dividend, divisor) {
-    var d = new Kairos.Gnomon(dividend);
-    d.divide(divisor);
-    return d.toExpression();
+    return Kairos.with(dividend).divide(divisor).toExpression();
   };
-  
+
   /**
    * Returns a fraction of the current time
    * 
@@ -128,13 +128,9 @@
     if (numerator > denominator) {
       throw new Error('Improper fraction');
     }
-
-    var gnomon = new Kairos.Gnomon(time);
-    gnomon.multiply(numerator);
-    gnomon.divide(denominator);
-    return gnomon.toExpression();
+    return Kairos.with(time).multiply(numerator).divide(denominator).toExpression();
   };
-  
+
   /**
    * Returns a time expression representing the time between starting time and ending time
    * 
@@ -150,9 +146,7 @@
     if (st.compareTo(en) > 0) {
       throw new Error('Starting time must be bigger than ending time');
     }
-    
-    en.minus(st);
-    return en.toExpression();
+    return en.minus(st).toExpression();
   };
 
   /**
@@ -164,8 +158,7 @@
    * @returns {Number}
    */
   Kairos.toMilliseconds = function (expression) {
-    var gnomon = new Kairos.Gnomon(expression);
-    return gnomon.toMilliseconds();
+    return Kairos.with(expression).toMilliseconds();
   };
 
   /**
@@ -177,8 +170,7 @@
    * @returns {Number}
    */
   Kairos.toSeconds = function (expression) {
-    var gnomon = new Kairos.Gnomon(expression);
-    return gnomon.toSeconds();
+    return Kairos.with(expression).toSeconds();
   };
 
   /**
@@ -190,8 +182,7 @@
    * @returns {Number}
    */
   Kairos.toMinutes = function (expression) {
-    var gnomon = new Kairos.Gnomon(expression);
-    return gnomon.toMinutes();
+    return Kairos.with(expression).toMinutes();
   };
 
   /**
@@ -203,10 +194,9 @@
    * @returns {Number}
    */
   Kairos.toHours = function (expression) {
-    var gnomon = new Kairos.Gnomon(expression);
-    return gnomon.toHours();
+    return Kairos.with(expression).toHours();
   };
-  
+
   /**
    * Compares first time with second time and returns -1, 0 or 1 if first value
    * is smaller, equals or bigger than second value
@@ -218,11 +208,9 @@
    * @returns {Number}
    */
   Kairos.compare = function (time1, time2) {
-    var a = new Kairos.Gnomon(time1);
-    var b = new Kairos.Gnomon(time2);
-    return a.compareTo(b);
+    return Kairos.with(time1).compareTo(time2);
   };
-  
+
   /**
    * Returns the minimum value from the given values
    * 
@@ -235,7 +223,7 @@
     if (!(values instanceof Array)) {
       values = Array.prototype.slice.call(arguments);
     }
-    
+
     var min = values.reduce(function (previous, current) {
       if (!(previous instanceof Kairos.Gnomon)) {
         previous = new Kairos.Gnomon(previous ? previous : 0);
@@ -248,7 +236,7 @@
     
     return (min instanceof Kairos.Gnomon) ? min.toExpression() : new Kairos.Gnomon(min).toExpression();
   };
-  
+
   /**
    * Returns the maximum value from the given values
    * 
@@ -261,7 +249,7 @@
     if (!(values instanceof Array)) {
       values = Array.prototype.slice.call(arguments);
     }
-    
+
     var max = values.reduce(function (previous, current) {
       if (!(previous instanceof Kairos.Gnomon)) {
         previous = new Kairos.Gnomon(previous ? previous : 0);
@@ -271,10 +259,10 @@
       }
       return ( previous.toMilliseconds() > current.toMilliseconds() ? previous : current );
     });
-    
+
     return (max instanceof Kairos.Gnomon) ? max.toExpression() : new Kairos.Gnomon(max).toExpression();
   };
-  
+
   // Node.js
   if (typeof module === 'object' && module.exports) {
     //=include /engine/Gnomon.js
@@ -290,7 +278,7 @@
   else {
     root.Kairos = Kairos;
   }
-  
+
   // Polyfill
   Math.trunc = Math.trunc || function (x) {
     return x < 0 ? Math.ceil(x) : Math.floor(x);
@@ -602,9 +590,7 @@
    * @returns {Kairos.Gnomon} self
    */
   Kairos.Gnomon.prototype.plus = function (addend) {
-    if (!(addend instanceof Kairos.Gnomon)) {
-      addend = new Kairos.Gnomon(addend);
-    }
+    addend = (addend instanceof Kairos.Gnomon) ? addend : new Kairos.Gnomon(addend);
     this.milliseconds += addend.toMilliseconds();
     return this;
   };
@@ -615,9 +601,7 @@
    * @returns {Kairos.Gnomon} self
    */
   Kairos.Gnomon.prototype.minus = function (subtrahend) {
-    if (!(subtrahend instanceof Kairos.Gnomon)) {
-      subtrahend = new Kairos.Gnomon(subtrahend);
-    }
+    subtrahend = (subtrahend instanceof Kairos.Gnomon) ? subtrahend : new Kairos.Gnomon(subtrahend);
     this.milliseconds -= subtrahend.toMilliseconds();
     return this;
   };
@@ -648,10 +632,12 @@
    * Equals   0
    * Bigger   1
    * 
-   * @param {Kairos.Gnomon} another
+   * @param {String|Number|Kairos.Gnomon} another Expression to compare with
    * @returns {Number}
    */
   Kairos.Gnomon.prototype.compareTo = function (another) {
+    another = (another instanceof Kairos.Gnomon) ? another : new Kairos.Gnomon(another);
+
     if (this.milliseconds < another.toMilliseconds()) {
       return -1;
     }
diff --git a/build/kairos-min.js b/build/kairos-min.js
index 6a429ba..9cd7c00 100644
--- a/build/kairos-min.js
+++ b/build/kairos-min.js
@@ -1,9 +1,9 @@
 /**
  * Kairos.js - A non date-based time calculator
  * @author Rodrigo Gomes da Silva <rodrigo.smscom@gmail.com>
- * @version v1.0.0
+ * @version v1.1.0
  * @link https://github.com/kairos
  * @license BSD-2-Clause
  */
-!function(){"use strict";var n,o={},e="object"==typeof self&&self.self===self&&self||"object"==typeof global&&global.global===global&&global||this;null!==e&&(n=e.Kairos),o.noConflict=function(){return e.Kairos=n,o},o.validateExpression=function(n){var o=/^[+-]?\d+(?::?\d{1,2}(?::\d{1,2}(?::\d{1,3})?)?)?$/;return o.test(n)},o.plus=function(n,e){var t=new o.Gnomon(n),r=new o.Gnomon(e);return t.plus(r),t.toExpression()},o.minus=function(n,e){var t=new o.Gnomon(n),r=new o.Gnomon(e);return t.minus(r),t.toExpression()},o.multiply=function(n,e){var t=new o.Gnomon(n);return t.multiply(e),t.toExpression()},o.divide=function(n,e){var t=new o.Gnomon(n);return t.divide(e),t.toExpression()},o.getFraction=function(n,e,t){if(e>t)throw new Error("Improper fraction");var r=new o.Gnomon(n);return r.multiply(e),r.divide(t),r.toExpression()},o.getInterval=function(n,e){var t=new o.Gnomon(n),r=new o.Gnomon(e);if(t.compareTo(r)>0)throw new Error("Starting time must be bigger than ending time");return r.minus(t),r.toExpression()},o.toMilliseconds=function(n){var e=new o.Gnomon(n);return e.toMilliseconds()},o.toSeconds=function(n){var e=new o.Gnomon(n);return e.toSeconds()},o.toMinutes=function(n){var e=new o.Gnomon(n);return e.toMinutes()},o.toHours=function(n){var e=new o.Gnomon(n);return e.toHours()},o.compare=function(n,e){var t=new o.Gnomon(n),r=new o.Gnomon(e);return t.compareTo(r)},o.min=function(n){n instanceof Array||(n=Array.prototype.slice.call(arguments));var e=n.reduce(function(n,e){return n instanceof o.Gnomon||(n=new o.Gnomon(n?n:0)),e instanceof o.Gnomon||(e=new o.Gnomon(e?e:0)),n.toMilliseconds()<e.toMilliseconds()?n:e});return e instanceof o.Gnomon?e.toExpression():new o.Gnomon(e).toExpression()},o.max=function(n){n instanceof Array||(n=Array.prototype.slice.call(arguments));var e=n.reduce(function(n,e){return n instanceof o.Gnomon||(n=new o.Gnomon(n?n:0)),e instanceof o.Gnomon||(e=new o.Gnomon(e?e:0)),n.toMilliseconds()>e.toMilliseconds()?n:e});return e instanceof o.Gnomon?e.toExpression():new o.Gnomon(e).toExpression()},"object"==typeof module&&module.exports?module.exports=o:"function"==typeof define&&define.amd?define([],function(){return o}):e.Kairos=o,Math.trunc=Math.trunc||function(n){return 0>n?Math.ceil(n):Math.floor(n)}}();
-!function(){"use strict";var o={SECOND:1e3,MINUTE:6e4,HOUR:36e5};Kairos.Gnomon=function(i){if("number"==typeof i)this.milliseconds=i;else if("string"==typeof i&&i.length>0){if(!Kairos.validateExpression(i))throw new Error("Invalid time expression");for(var t=i.split(":"),n="-"!==i.slice(0,1)[0],e=0,r=t.length;r>e;e++){var c=t[e];switch(c=Math.abs(c),e){case 0:this.milliseconds=s(this,o.HOUR,c);break;case 1:this.milliseconds=s(this,o.MINUTE,c);break;case 2:this.milliseconds=s(this,o.SECOND,c);break;case 3:this.milliseconds=s(this,1,c)}}n||(this.milliseconds=-Math.abs(this.milliseconds))}};var s=function(s,i,t){switch(i){case 1:s.removeMilliseconds(s.getMilliseconds());break;case o.SECOND:s.removeSeconds(s.getSeconds());break;case o.MINUTE:s.removeMinutes(s.getMinutes());break;case o.HOUR:s.removeHours(s.getHours())}return s.milliseconds+t*i};Kairos.Gnomon.prototype.milliseconds=0,Kairos.Gnomon.prototype.setHours=function(i){return this.milliseconds=s(this,o.HOUR,i),this},Kairos.Gnomon.prototype.getHours=function(){return Math.trunc(this.milliseconds/o.HOUR)},Kairos.Gnomon.prototype.setMinutes=function(i){return this.milliseconds=s(this,o.MINUTE,i),this},Kairos.Gnomon.prototype.getMinutes=function(){return Math.trunc(Math.trunc(this.milliseconds-Math.trunc(this.toHours())*o.HOUR)/o.MINUTE)},Kairos.Gnomon.prototype.setSeconds=function(i){return this.milliseconds=s(this,o.SECOND,i),this},Kairos.Gnomon.prototype.getSeconds=function(){return Math.trunc(Math.trunc(this.milliseconds-Math.trunc(this.toMinutes())*o.MINUTE)/o.SECOND)},Kairos.Gnomon.prototype.setMilliseconds=function(o){return this.milliseconds=s(this,1,o),this},Kairos.Gnomon.prototype.getMilliseconds=function(){return Math.trunc(this.milliseconds-Math.trunc(this.toSeconds())*o.SECOND)},Kairos.Gnomon.prototype.addHours=function(s){return this.milliseconds+=o.HOUR*s,this},Kairos.Gnomon.prototype.addMinutes=function(s){return this.milliseconds+=o.MINUTE*s,this},Kairos.Gnomon.prototype.addSeconds=function(s){return this.milliseconds+=o.SECOND*s,this},Kairos.Gnomon.prototype.addMilliseconds=function(o){return this.milliseconds+=o,this},Kairos.Gnomon.prototype.removeHours=function(s){return this.milliseconds-=o.HOUR*s,this},Kairos.Gnomon.prototype.removeMinutes=function(s){return this.milliseconds-=o.MINUTE*s,this},Kairos.Gnomon.prototype.removeSeconds=function(s){return this.milliseconds-=o.SECOND*s,this},Kairos.Gnomon.prototype.removeMilliseconds=function(o){return this.milliseconds-=o,this},Kairos.Gnomon.prototype.toHours=function(){return this.milliseconds/o.HOUR},Kairos.Gnomon.prototype.toMinutes=function(){return this.milliseconds/o.MINUTE},Kairos.Gnomon.prototype.toSeconds=function(){return this.milliseconds/o.SECOND},Kairos.Gnomon.prototype.toMilliseconds=function(){return this.milliseconds},Kairos.Gnomon.prototype.toExpression=function(){var o="",s=Math.trunc(Math.abs(this.getHours()));return o+=(String(s).length>1?"":"0")+s+":",o+=("00"+Math.trunc(Math.abs(this.getMinutes()))).slice(-2),(0!==this.getSeconds()||0!==this.getMilliseconds())&&(o+=":"+("00"+Math.trunc(Math.abs(this.getSeconds()))).slice(-2)),0!==this.getMilliseconds()&&(o+=":"+("000"+Math.trunc(Math.abs(this.getMilliseconds()))).slice(-3)),this.milliseconds<0&&(o="-"+o),o},Kairos.Gnomon.prototype.plus=function(o){return o instanceof Kairos.Gnomon||(o=new Kairos.Gnomon(o)),this.milliseconds+=o.toMilliseconds(),this},Kairos.Gnomon.prototype.minus=function(o){return o instanceof Kairos.Gnomon||(o=new Kairos.Gnomon(o)),this.milliseconds-=o.toMilliseconds(),this},Kairos.Gnomon.prototype.multiply=function(o){return this.milliseconds*=o,this},Kairos.Gnomon.prototype.divide=function(o){return this.milliseconds/=o,this},Kairos.Gnomon.prototype.compareTo=function(o){return this.milliseconds<o.toMilliseconds()?-1:this.milliseconds===o.toMilliseconds()?0:this.milliseconds>o.toMilliseconds()?1:void 0}}();
\ No newline at end of file
+!function(){"use strict";var n,o={},t="object"==typeof self&&self.self===self&&self||"object"==typeof global&&global.global===global&&global||this;null!==t&&(n=t.Kairos),o.noConflict=function(){return t.Kairos=n,o},o.validateExpression=function(n){var o=/^[+-]?\d+(?::?\d{1,2}(?::\d{1,2}(?::\d{1,3})?)?)?$/;return o.test(n)},o["with"]=function(n){return new o.Gnomon(n)},o.plus=function(n,t){return o["with"](n).plus(t).toExpression()},o.minus=function(n,t){return o["with"](n).minus(t).toExpression()},o.multiply=function(n,t){return o["with"](n).multiply(t).toExpression()},o.divide=function(n,t){return o["with"](n).divide(t).toExpression()},o.getFraction=function(n,t,e){if(t>e)throw new Error("Improper fraction");return o["with"](n).multiply(t).divide(e).toExpression()},o.getInterval=function(n,t){var e=new o.Gnomon(n),i=new o.Gnomon(t);if(e.compareTo(i)>0)throw new Error("Starting time must be bigger than ending time");return i.minus(e).toExpression()},o.toMilliseconds=function(n){return o["with"](n).toMilliseconds()},o.toSeconds=function(n){return o["with"](n).toSeconds()},o.toMinutes=function(n){return o["with"](n).toMinutes()},o.toHours=function(n){return o["with"](n).toHours()},o.compare=function(n,t){return o["with"](n).compareTo(t)},o.min=function(n){n instanceof Array||(n=Array.prototype.slice.call(arguments));var t=n.reduce(function(n,t){return n instanceof o.Gnomon||(n=new o.Gnomon(n?n:0)),t instanceof o.Gnomon||(t=new o.Gnomon(t?t:0)),n.toMilliseconds()<t.toMilliseconds()?n:t});return t instanceof o.Gnomon?t.toExpression():new o.Gnomon(t).toExpression()},o.max=function(n){n instanceof Array||(n=Array.prototype.slice.call(arguments));var t=n.reduce(function(n,t){return n instanceof o.Gnomon||(n=new o.Gnomon(n?n:0)),t instanceof o.Gnomon||(t=new o.Gnomon(t?t:0)),n.toMilliseconds()>t.toMilliseconds()?n:t});return t instanceof o.Gnomon?t.toExpression():new o.Gnomon(t).toExpression()},"object"==typeof module&&module.exports?module.exports=o:"function"==typeof define&&define.amd?define([],function(){return o}):t.Kairos=o,Math.trunc=Math.trunc||function(n){return 0>n?Math.ceil(n):Math.floor(n)}}();
+!function(){"use strict";var o={SECOND:1e3,MINUTE:6e4,HOUR:36e5};Kairos.Gnomon=function(i){if("number"==typeof i)this.milliseconds=i;else if("string"==typeof i&&i.length>0){if(!Kairos.validateExpression(i))throw new Error("Invalid time expression");for(var t=i.split(":"),n="-"!==i.slice(0,1)[0],e=0,r=t.length;r>e;e++){var c=t[e];switch(c=Math.abs(c),e){case 0:this.milliseconds=s(this,o.HOUR,c);break;case 1:this.milliseconds=s(this,o.MINUTE,c);break;case 2:this.milliseconds=s(this,o.SECOND,c);break;case 3:this.milliseconds=s(this,1,c)}}n||(this.milliseconds=-Math.abs(this.milliseconds))}};var s=function(s,i,t){switch(i){case 1:s.removeMilliseconds(s.getMilliseconds());break;case o.SECOND:s.removeSeconds(s.getSeconds());break;case o.MINUTE:s.removeMinutes(s.getMinutes());break;case o.HOUR:s.removeHours(s.getHours())}return s.milliseconds+t*i};Kairos.Gnomon.prototype.milliseconds=0,Kairos.Gnomon.prototype.setHours=function(i){return this.milliseconds=s(this,o.HOUR,i),this},Kairos.Gnomon.prototype.getHours=function(){return Math.trunc(this.milliseconds/o.HOUR)},Kairos.Gnomon.prototype.setMinutes=function(i){return this.milliseconds=s(this,o.MINUTE,i),this},Kairos.Gnomon.prototype.getMinutes=function(){return Math.trunc(Math.trunc(this.milliseconds-Math.trunc(this.toHours())*o.HOUR)/o.MINUTE)},Kairos.Gnomon.prototype.setSeconds=function(i){return this.milliseconds=s(this,o.SECOND,i),this},Kairos.Gnomon.prototype.getSeconds=function(){return Math.trunc(Math.trunc(this.milliseconds-Math.trunc(this.toMinutes())*o.MINUTE)/o.SECOND)},Kairos.Gnomon.prototype.setMilliseconds=function(o){return this.milliseconds=s(this,1,o),this},Kairos.Gnomon.prototype.getMilliseconds=function(){return Math.trunc(this.milliseconds-Math.trunc(this.toSeconds())*o.SECOND)},Kairos.Gnomon.prototype.addHours=function(s){return this.milliseconds+=o.HOUR*s,this},Kairos.Gnomon.prototype.addMinutes=function(s){return this.milliseconds+=o.MINUTE*s,this},Kairos.Gnomon.prototype.addSeconds=function(s){return this.milliseconds+=o.SECOND*s,this},Kairos.Gnomon.prototype.addMilliseconds=function(o){return this.milliseconds+=o,this},Kairos.Gnomon.prototype.removeHours=function(s){return this.milliseconds-=o.HOUR*s,this},Kairos.Gnomon.prototype.removeMinutes=function(s){return this.milliseconds-=o.MINUTE*s,this},Kairos.Gnomon.prototype.removeSeconds=function(s){return this.milliseconds-=o.SECOND*s,this},Kairos.Gnomon.prototype.removeMilliseconds=function(o){return this.milliseconds-=o,this},Kairos.Gnomon.prototype.toHours=function(){return this.milliseconds/o.HOUR},Kairos.Gnomon.prototype.toMinutes=function(){return this.milliseconds/o.MINUTE},Kairos.Gnomon.prototype.toSeconds=function(){return this.milliseconds/o.SECOND},Kairos.Gnomon.prototype.toMilliseconds=function(){return this.milliseconds},Kairos.Gnomon.prototype.toExpression=function(){var o="",s=Math.trunc(Math.abs(this.getHours()));return o+=(String(s).length>1?"":"0")+s+":",o+=("00"+Math.trunc(Math.abs(this.getMinutes()))).slice(-2),(0!==this.getSeconds()||0!==this.getMilliseconds())&&(o+=":"+("00"+Math.trunc(Math.abs(this.getSeconds()))).slice(-2)),0!==this.getMilliseconds()&&(o+=":"+("000"+Math.trunc(Math.abs(this.getMilliseconds()))).slice(-3)),this.milliseconds<0&&(o="-"+o),o},Kairos.Gnomon.prototype.plus=function(o){return o=o instanceof Kairos.Gnomon?o:new Kairos.Gnomon(o),this.milliseconds+=o.toMilliseconds(),this},Kairos.Gnomon.prototype.minus=function(o){return o=o instanceof Kairos.Gnomon?o:new Kairos.Gnomon(o),this.milliseconds-=o.toMilliseconds(),this},Kairos.Gnomon.prototype.multiply=function(o){return this.milliseconds*=o,this},Kairos.Gnomon.prototype.divide=function(o){return this.milliseconds/=o,this},Kairos.Gnomon.prototype.compareTo=function(o){return o=o instanceof Kairos.Gnomon?o:new Kairos.Gnomon(o),this.milliseconds<o.toMilliseconds()?-1:this.milliseconds===o.toMilliseconds()?0:this.milliseconds>o.toMilliseconds()?1:void 0}}();
\ No newline at end of file
diff --git a/build/kairos-node.js b/build/kairos-node.js
index c1786b0..003ed22 100644
--- a/build/kairos-node.js
+++ b/build/kairos-node.js
@@ -1,7 +1,7 @@
 /**
  * Kairos.js - A non date-based time calculator
  * @author Rodrigo Gomes da Silva <rodrigo.smscom@gmail.com>
- * @version v1.0.0
+ * @version v1.1.0
  * @link https://github.com/kairos
  * @license BSD-2-Clause
  */
@@ -51,7 +51,17 @@
     var regex = /^[+-]?\d+(?::?\d{1,2}(?::\d{1,2}(?::\d{1,3})?)?)?$/;
     return regex.test(expression);
   };
-  
+
+  /**
+   * Return a Kairos.Gnomon instance.
+   * 
+   * @param {String|Number} expression Time expression
+   * @returns {Kairos.Gnomon}
+   */
+  Kairos.with = function (expression) {
+    return new Kairos.Gnomon(expression);
+  };
+
   /**
    * Sums augend time with addend time
    *
@@ -62,10 +72,7 @@
    * @returns {String}
    */
   Kairos.plus = function (augend, addend) {
-    var a = new Kairos.Gnomon(augend);
-    var b = new Kairos.Gnomon(addend);
-    a.plus(b);
-    return a.toExpression();
+    return Kairos.with(augend).plus(addend).toExpression();
   };
 
   /**
@@ -78,10 +85,7 @@
    * @returns {String}
    */
   Kairos.minus = function (minuend, subtrahend) {
-    var a = new Kairos.Gnomon(minuend);
-    var b = new Kairos.Gnomon(subtrahend);
-    a.minus(b);
-    return a.toExpression();
+    return Kairos.with(minuend).minus(subtrahend).toExpression();
   };
 
   /**
@@ -94,9 +98,7 @@
    * @returns {String}
    */
   Kairos.multiply = function (multiplier, multiplicand) {
-    var m = new Kairos.Gnomon(multiplier);
-    m.multiply(multiplicand);
-    return m.toExpression();
+    return Kairos.with(multiplier).multiply(multiplicand).toExpression();
   };
 
   /**
@@ -109,11 +111,9 @@
    * @returns {String}
    */
   Kairos.divide = function (dividend, divisor) {
-    var d = new Kairos.Gnomon(dividend);
-    d.divide(divisor);
-    return d.toExpression();
+    return Kairos.with(dividend).divide(divisor).toExpression();
   };
-  
+
   /**
    * Returns a fraction of the current time
    * 
@@ -128,13 +128,9 @@
     if (numerator > denominator) {
       throw new Error('Improper fraction');
     }
-
-    var gnomon = new Kairos.Gnomon(time);
-    gnomon.multiply(numerator);
-    gnomon.divide(denominator);
-    return gnomon.toExpression();
+    return Kairos.with(time).multiply(numerator).divide(denominator).toExpression();
   };
-  
+
   /**
    * Returns a time expression representing the time between starting time and ending time
    * 
@@ -150,9 +146,7 @@
     if (st.compareTo(en) > 0) {
       throw new Error('Starting time must be bigger than ending time');
     }
-    
-    en.minus(st);
-    return en.toExpression();
+    return en.minus(st).toExpression();
   };
 
   /**
@@ -164,8 +158,7 @@
    * @returns {Number}
    */
   Kairos.toMilliseconds = function (expression) {
-    var gnomon = new Kairos.Gnomon(expression);
-    return gnomon.toMilliseconds();
+    return Kairos.with(expression).toMilliseconds();
   };
 
   /**
@@ -177,8 +170,7 @@
    * @returns {Number}
    */
   Kairos.toSeconds = function (expression) {
-    var gnomon = new Kairos.Gnomon(expression);
-    return gnomon.toSeconds();
+    return Kairos.with(expression).toSeconds();
   };
 
   /**
@@ -190,8 +182,7 @@
    * @returns {Number}
    */
   Kairos.toMinutes = function (expression) {
-    var gnomon = new Kairos.Gnomon(expression);
-    return gnomon.toMinutes();
+    return Kairos.with(expression).toMinutes();
   };
 
   /**
@@ -203,10 +194,9 @@
    * @returns {Number}
    */
   Kairos.toHours = function (expression) {
-    var gnomon = new Kairos.Gnomon(expression);
-    return gnomon.toHours();
+    return Kairos.with(expression).toHours();
   };
-  
+
   /**
    * Compares first time with second time and returns -1, 0 or 1 if first value
    * is smaller, equals or bigger than second value
@@ -218,11 +208,9 @@
    * @returns {Number}
    */
   Kairos.compare = function (time1, time2) {
-    var a = new Kairos.Gnomon(time1);
-    var b = new Kairos.Gnomon(time2);
-    return a.compareTo(b);
+    return Kairos.with(time1).compareTo(time2);
   };
-  
+
   /**
    * Returns the minimum value from the given values
    * 
@@ -235,7 +223,7 @@
     if (!(values instanceof Array)) {
       values = Array.prototype.slice.call(arguments);
     }
-    
+
     var min = values.reduce(function (previous, current) {
       if (!(previous instanceof Kairos.Gnomon)) {
         previous = new Kairos.Gnomon(previous ? previous : 0);
@@ -248,7 +236,7 @@
     
     return (min instanceof Kairos.Gnomon) ? min.toExpression() : new Kairos.Gnomon(min).toExpression();
   };
-  
+
   /**
    * Returns the maximum value from the given values
    * 
@@ -261,7 +249,7 @@
     if (!(values instanceof Array)) {
       values = Array.prototype.slice.call(arguments);
     }
-    
+
     var max = values.reduce(function (previous, current) {
       if (!(previous instanceof Kairos.Gnomon)) {
         previous = new Kairos.Gnomon(previous ? previous : 0);
@@ -271,10 +259,10 @@
       }
       return ( previous.toMilliseconds() > current.toMilliseconds() ? previous : current );
     });
-    
+
     return (max instanceof Kairos.Gnomon) ? max.toExpression() : new Kairos.Gnomon(max).toExpression();
   };
-  
+
   // Node.js
   if (typeof module === 'object' && module.exports) {
     (function () {
@@ -583,9 +571,7 @@
        * @returns {Kairos.Gnomon} self
        */
       Kairos.Gnomon.prototype.plus = function (addend) {
-        if (!(addend instanceof Kairos.Gnomon)) {
-          addend = new Kairos.Gnomon(addend);
-        }
+        addend = (addend instanceof Kairos.Gnomon) ? addend : new Kairos.Gnomon(addend);
         this.milliseconds += addend.toMilliseconds();
         return this;
       };
@@ -596,9 +582,7 @@
        * @returns {Kairos.Gnomon} self
        */
       Kairos.Gnomon.prototype.minus = function (subtrahend) {
-        if (!(subtrahend instanceof Kairos.Gnomon)) {
-          subtrahend = new Kairos.Gnomon(subtrahend);
-        }
+        subtrahend = (subtrahend instanceof Kairos.Gnomon) ? subtrahend : new Kairos.Gnomon(subtrahend);
         this.milliseconds -= subtrahend.toMilliseconds();
         return this;
       };
@@ -629,10 +613,12 @@
        * Equals   0
        * Bigger   1
        * 
-       * @param {Kairos.Gnomon} another
+       * @param {String|Number|Kairos.Gnomon} another Expression to compare with
        * @returns {Number}
        */
       Kairos.Gnomon.prototype.compareTo = function (another) {
+        another = (another instanceof Kairos.Gnomon) ? another : new Kairos.Gnomon(another);
+    
         if (this.milliseconds < another.toMilliseconds()) {
           return -1;
         }
@@ -656,7 +642,7 @@
   else {
     root.Kairos = Kairos;
   }
-  
+
   // Polyfill
   Math.trunc = Math.trunc || function (x) {
     return x < 0 ? Math.ceil(x) : Math.floor(x);
diff --git a/build/kairos.js b/build/kairos.js
index a5d9c3b..2a32edc 100644
--- a/build/kairos.js
+++ b/build/kairos.js
@@ -1,7 +1,7 @@
 /**
  * Kairos.js - A non date-based time calculator
  * @author Rodrigo Gomes da Silva <rodrigo.smscom@gmail.com>
- * @version v1.0.0
+ * @version v1.1.0
  * @link https://github.com/kairos
  * @license BSD-2-Clause
  */
@@ -51,7 +51,17 @@
     var regex = /^[+-]?\d+(?::?\d{1,2}(?::\d{1,2}(?::\d{1,3})?)?)?$/;
     return regex.test(expression);
   };
-  
+
+  /**
+   * Return a Kairos.Gnomon instance.
+   * 
+   * @param {String|Number} expression Time expression
+   * @returns {Kairos.Gnomon}
+   */
+  Kairos.with = function (expression) {
+    return new Kairos.Gnomon(expression);
+  };
+
   /**
    * Sums augend time with addend time
    *
@@ -62,10 +72,7 @@
    * @returns {String}
    */
   Kairos.plus = function (augend, addend) {
-    var a = new Kairos.Gnomon(augend);
-    var b = new Kairos.Gnomon(addend);
-    a.plus(b);
-    return a.toExpression();
+    return Kairos.with(augend).plus(addend).toExpression();
   };
 
   /**
@@ -78,10 +85,7 @@
    * @returns {String}
    */
   Kairos.minus = function (minuend, subtrahend) {
-    var a = new Kairos.Gnomon(minuend);
-    var b = new Kairos.Gnomon(subtrahend);
-    a.minus(b);
-    return a.toExpression();
+    return Kairos.with(minuend).minus(subtrahend).toExpression();
   };
 
   /**
@@ -94,9 +98,7 @@
    * @returns {String}
    */
   Kairos.multiply = function (multiplier, multiplicand) {
-    var m = new Kairos.Gnomon(multiplier);
-    m.multiply(multiplicand);
-    return m.toExpression();
+    return Kairos.with(multiplier).multiply(multiplicand).toExpression();
   };
 
   /**
@@ -109,11 +111,9 @@
    * @returns {String}
    */
   Kairos.divide = function (dividend, divisor) {
-    var d = new Kairos.Gnomon(dividend);
-    d.divide(divisor);
-    return d.toExpression();
+    return Kairos.with(dividend).divide(divisor).toExpression();
   };
-  
+
   /**
    * Returns a fraction of the current time
    * 
@@ -128,13 +128,9 @@
     if (numerator > denominator) {
       throw new Error('Improper fraction');
     }
-
-    var gnomon = new Kairos.Gnomon(time);
-    gnomon.multiply(numerator);
-    gnomon.divide(denominator);
-    return gnomon.toExpression();
+    return Kairos.with(time).multiply(numerator).divide(denominator).toExpression();
   };
-  
+
   /**
    * Returns a time expression representing the time between starting time and ending time
    * 
@@ -150,9 +146,7 @@
     if (st.compareTo(en) > 0) {
       throw new Error('Starting time must be bigger than ending time');
     }
-    
-    en.minus(st);
-    return en.toExpression();
+    return en.minus(st).toExpression();
   };
 
   /**
@@ -164,8 +158,7 @@
    * @returns {Number}
    */
   Kairos.toMilliseconds = function (expression) {
-    var gnomon = new Kairos.Gnomon(expression);
-    return gnomon.toMilliseconds();
+    return Kairos.with(expression).toMilliseconds();
   };
 
   /**
@@ -177,8 +170,7 @@
    * @returns {Number}
    */
   Kairos.toSeconds = function (expression) {
-    var gnomon = new Kairos.Gnomon(expression);
-    return gnomon.toSeconds();
+    return Kairos.with(expression).toSeconds();
   };
 
   /**
@@ -190,8 +182,7 @@
    * @returns {Number}
    */
   Kairos.toMinutes = function (expression) {
-    var gnomon = new Kairos.Gnomon(expression);
-    return gnomon.toMinutes();
+    return Kairos.with(expression).toMinutes();
   };
 
   /**
@@ -203,10 +194,9 @@
    * @returns {Number}
    */
   Kairos.toHours = function (expression) {
-    var gnomon = new Kairos.Gnomon(expression);
-    return gnomon.toHours();
+    return Kairos.with(expression).toHours();
   };
-  
+
   /**
    * Compares first time with second time and returns -1, 0 or 1 if first value
    * is smaller, equals or bigger than second value
@@ -218,11 +208,9 @@
    * @returns {Number}
    */
   Kairos.compare = function (time1, time2) {
-    var a = new Kairos.Gnomon(time1);
-    var b = new Kairos.Gnomon(time2);
-    return a.compareTo(b);
+    return Kairos.with(time1).compareTo(time2);
   };
-  
+
   /**
    * Returns the minimum value from the given values
    * 
@@ -235,7 +223,7 @@
     if (!(values instanceof Array)) {
       values = Array.prototype.slice.call(arguments);
     }
-    
+
     var min = values.reduce(function (previous, current) {
       if (!(previous instanceof Kairos.Gnomon)) {
         previous = new Kairos.Gnomon(previous ? previous : 0);
@@ -248,7 +236,7 @@
     
     return (min instanceof Kairos.Gnomon) ? min.toExpression() : new Kairos.Gnomon(min).toExpression();
   };
-  
+
   /**
    * Returns the maximum value from the given values
    * 
@@ -261,7 +249,7 @@
     if (!(values instanceof Array)) {
       values = Array.prototype.slice.call(arguments);
     }
-    
+
     var max = values.reduce(function (previous, current) {
       if (!(previous instanceof Kairos.Gnomon)) {
         previous = new Kairos.Gnomon(previous ? previous : 0);
@@ -271,10 +259,10 @@
       }
       return ( previous.toMilliseconds() > current.toMilliseconds() ? previous : current );
     });
-    
+
     return (max instanceof Kairos.Gnomon) ? max.toExpression() : new Kairos.Gnomon(max).toExpression();
   };
-  
+
   // Node.js
   if (typeof module === 'object' && module.exports) {
     //=include /engine/Gnomon.js
@@ -290,7 +278,7 @@
   else {
     root.Kairos = Kairos;
   }
-  
+
   // Polyfill
   Math.trunc = Math.trunc || function (x) {
     return x < 0 ? Math.ceil(x) : Math.floor(x);
@@ -602,9 +590,7 @@
    * @returns {Kairos.Gnomon} self
    */
   Kairos.Gnomon.prototype.plus = function (addend) {
-    if (!(addend instanceof Kairos.Gnomon)) {
-      addend = new Kairos.Gnomon(addend);
-    }
+    addend = (addend instanceof Kairos.Gnomon) ? addend : new Kairos.Gnomon(addend);
     this.milliseconds += addend.toMilliseconds();
     return this;
   };
@@ -615,9 +601,7 @@
    * @returns {Kairos.Gnomon} self
    */
   Kairos.Gnomon.prototype.minus = function (subtrahend) {
-    if (!(subtrahend instanceof Kairos.Gnomon)) {
-      subtrahend = new Kairos.Gnomon(subtrahend);
-    }
+    subtrahend = (subtrahend instanceof Kairos.Gnomon) ? subtrahend : new Kairos.Gnomon(subtrahend);
     this.milliseconds -= subtrahend.toMilliseconds();
     return this;
   };
@@ -648,10 +632,12 @@
    * Equals   0
    * Bigger   1
    * 
-   * @param {Kairos.Gnomon} another
+   * @param {String|Number|Kairos.Gnomon} another Expression to compare with
    * @returns {Number}
    */
   Kairos.Gnomon.prototype.compareTo = function (another) {
+    another = (another instanceof Kairos.Gnomon) ? another : new Kairos.Gnomon(another);
+
     if (this.milliseconds < another.toMilliseconds()) {
       return -1;
     }
diff --git a/package.json b/package.json
index d9e60db..9656e75 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "kairos",
-  "version": "1.0.0",
+  "version": "1.1.0",
   "description": "A non date-based time calculator",
   "license": "BSD-2-Clause",
   "repository": "kairos",
diff --git a/src/engine/Gnomon.js b/src/engine/Gnomon.js
index 6507797..0d1fab8 100644
--- a/src/engine/Gnomon.js
+++ b/src/engine/Gnomon.js
@@ -304,9 +304,7 @@
    * @returns {Kairos.Gnomon} self
    */
   Kairos.Gnomon.prototype.plus = function (addend) {
-    if (!(addend instanceof Kairos.Gnomon)) {
-      addend = new Kairos.Gnomon(addend);
-    }
+    addend = (addend instanceof Kairos.Gnomon) ? addend : new Kairos.Gnomon(addend);
     this.milliseconds += addend.toMilliseconds();
     return this;
   };
@@ -317,9 +315,7 @@
    * @returns {Kairos.Gnomon} self
    */
   Kairos.Gnomon.prototype.minus = function (subtrahend) {
-    if (!(subtrahend instanceof Kairos.Gnomon)) {
-      subtrahend = new Kairos.Gnomon(subtrahend);
-    }
+    subtrahend = (subtrahend instanceof Kairos.Gnomon) ? subtrahend : new Kairos.Gnomon(subtrahend);
     this.milliseconds -= subtrahend.toMilliseconds();
     return this;
   };
@@ -350,10 +346,12 @@
    * Equals   0
    * Bigger   1
    * 
-   * @param {Kairos.Gnomon} another
+   * @param {String|Number|Kairos.Gnomon} another Expression to compare with
    * @returns {Number}
    */
   Kairos.Gnomon.prototype.compareTo = function (another) {
+    another = (another instanceof Kairos.Gnomon) ? another : new Kairos.Gnomon(another);
+
     if (this.milliseconds < another.toMilliseconds()) {
       return -1;
     }
diff --git a/src/kairos.js b/src/kairos.js
index 6fccb2d..c22001b 100644
--- a/src/kairos.js
+++ b/src/kairos.js
@@ -44,7 +44,17 @@
     var regex = /^[+-]?\d+(?::?\d{1,2}(?::\d{1,2}(?::\d{1,3})?)?)?$/;
     return regex.test(expression);
   };
-  
+
+  /**
+   * Return a Kairos.Gnomon instance.
+   * 
+   * @param {String|Number} expression Time expression
+   * @returns {Kairos.Gnomon}
+   */
+  Kairos.with = function (expression) {
+    return new Kairos.Gnomon(expression);
+  };
+
   /**
    * Sums augend time with addend time
    *
@@ -55,10 +65,7 @@
    * @returns {String}
    */
   Kairos.plus = function (augend, addend) {
-    var a = new Kairos.Gnomon(augend);
-    var b = new Kairos.Gnomon(addend);
-    a.plus(b);
-    return a.toExpression();
+    return Kairos.with(augend).plus(addend).toExpression();
   };
 
   /**
@@ -71,10 +78,7 @@
    * @returns {String}
    */
   Kairos.minus = function (minuend, subtrahend) {
-    var a = new Kairos.Gnomon(minuend);
-    var b = new Kairos.Gnomon(subtrahend);
-    a.minus(b);
-    return a.toExpression();
+    return Kairos.with(minuend).minus(subtrahend).toExpression();
   };
 
   /**
@@ -87,9 +91,7 @@
    * @returns {String}
    */
   Kairos.multiply = function (multiplier, multiplicand) {
-    var m = new Kairos.Gnomon(multiplier);
-    m.multiply(multiplicand);
-    return m.toExpression();
+    return Kairos.with(multiplier).multiply(multiplicand).toExpression();
   };
 
   /**
@@ -102,11 +104,9 @@
    * @returns {String}
    */
   Kairos.divide = function (dividend, divisor) {
-    var d = new Kairos.Gnomon(dividend);
-    d.divide(divisor);
-    return d.toExpression();
+    return Kairos.with(dividend).divide(divisor).toExpression();
   };
-  
+
   /**
    * Returns a fraction of the current time
    * 
@@ -121,13 +121,9 @@
     if (numerator > denominator) {
       throw new Error('Improper fraction');
     }
-
-    var gnomon = new Kairos.Gnomon(time);
-    gnomon.multiply(numerator);
-    gnomon.divide(denominator);
-    return gnomon.toExpression();
+    return Kairos.with(time).multiply(numerator).divide(denominator).toExpression();
   };
-  
+
   /**
    * Returns a time expression representing the time between starting time and ending time
    * 
@@ -143,9 +139,7 @@
     if (st.compareTo(en) > 0) {
       throw new Error('Starting time must be bigger than ending time');
     }
-    
-    en.minus(st);
-    return en.toExpression();
+    return en.minus(st).toExpression();
   };
 
   /**
@@ -157,8 +151,7 @@
    * @returns {Number}
    */
   Kairos.toMilliseconds = function (expression) {
-    var gnomon = new Kairos.Gnomon(expression);
-    return gnomon.toMilliseconds();
+    return Kairos.with(expression).toMilliseconds();
   };
 
   /**
@@ -170,8 +163,7 @@
    * @returns {Number}
    */
   Kairos.toSeconds = function (expression) {
-    var gnomon = new Kairos.Gnomon(expression);
-    return gnomon.toSeconds();
+    return Kairos.with(expression).toSeconds();
   };
 
   /**
@@ -183,8 +175,7 @@
    * @returns {Number}
    */
   Kairos.toMinutes = function (expression) {
-    var gnomon = new Kairos.Gnomon(expression);
-    return gnomon.toMinutes();
+    return Kairos.with(expression).toMinutes();
   };
 
   /**
@@ -196,10 +187,9 @@
    * @returns {Number}
    */
   Kairos.toHours = function (expression) {
-    var gnomon = new Kairos.Gnomon(expression);
-    return gnomon.toHours();
+    return Kairos.with(expression).toHours();
   };
-  
+
   /**
    * Compares first time with second time and returns -1, 0 or 1 if first value
    * is smaller, equals or bigger than second value
@@ -211,11 +201,9 @@
    * @returns {Number}
    */
   Kairos.compare = function (time1, time2) {
-    var a = new Kairos.Gnomon(time1);
-    var b = new Kairos.Gnomon(time2);
-    return a.compareTo(b);
+    return Kairos.with(time1).compareTo(time2);
   };
-  
+
   /**
    * Returns the minimum value from the given values
    * 
@@ -228,7 +216,7 @@
     if (!(values instanceof Array)) {
       values = Array.prototype.slice.call(arguments);
     }
-    
+
     var min = values.reduce(function (previous, current) {
       if (!(previous instanceof Kairos.Gnomon)) {
         previous = new Kairos.Gnomon(previous ? previous : 0);
@@ -241,7 +229,7 @@
     
     return (min instanceof Kairos.Gnomon) ? min.toExpression() : new Kairos.Gnomon(min).toExpression();
   };
-  
+
   /**
    * Returns the maximum value from the given values
    * 
@@ -254,7 +242,7 @@
     if (!(values instanceof Array)) {
       values = Array.prototype.slice.call(arguments);
     }
-    
+
     var max = values.reduce(function (previous, current) {
       if (!(previous instanceof Kairos.Gnomon)) {
         previous = new Kairos.Gnomon(previous ? previous : 0);
@@ -264,10 +252,10 @@
       }
       return ( previous.toMilliseconds() > current.toMilliseconds() ? previous : current );
     });
-    
+
     return (max instanceof Kairos.Gnomon) ? max.toExpression() : new Kairos.Gnomon(max).toExpression();
   };
-  
+
   // Node.js
   if (typeof module === 'object' && module.exports) {
     //=include /engine/Gnomon.js
@@ -283,7 +271,7 @@
   else {
     root.Kairos = Kairos;
   }
-  
+
   // Polyfill
   Math.trunc = Math.trunc || function (x) {
     return x < 0 ? Math.ceil(x) : Math.floor(x);
diff --git a/test/browser/kairos.js b/test/browser/kairos.js
index 0f548e1..adc12fa 100644
--- a/test/browser/kairos.js
+++ b/test/browser/kairos.js
@@ -160,4 +160,15 @@ describe('Kairos', function () {
     assert.equal(Kairos.validateExpression('10:01:00:000'), true);
     done();
   });
+  
+  it('should create an instance of Kairos.Gnomon', function (done) {
+    var a = Kairos.with();
+    var b = Kairos.with('01:00');
+    var c = Kairos.with(123);
+
+    assert.ok(a instanceof Kairos.Gnomon);
+    assert.ok(b instanceof Kairos.Gnomon);
+    assert.ok(c instanceof Kairos.Gnomon);
+    done();
+  });
 });