<sod>  
 One classic diagram is to place a two squares on top of each other with the corners of one being the classical elements, and the corners of the other being the properties.
 
These elements were used by [[Galen]] in describing the human body with an association with the [[four humours]]:  [[phlegm]], [[yellow bile]], [[black bile]], and [[blood as one of the four humours|blood]].
 
 Some cosmologies include a fifth element, [[aether]], and some chinese cosmologies include [[Classical_element/Metal|metal]] and [[Classical_element/Wood|wood]] but exclude air.
 
 <eod> <sod> 
 One classic diagram is to place a two squares on top of each other with the corners of one being the classical elements, and the corners of the other being the properties.
 
These elements were used by [[Hippocrates]] in describing the human body with an association with the [[four humours]]:  [[phlegm]], [[yellow bile]], [[black bile]], and [[blood as one of the four humours|blood]].
 
 Some cosmologies include a fifth element, [[aether]], and some chinese cosmologies include [[Classical_element/Metal|metal]] and [[Classical_element/Wood|wood]] but exclude air.
 
 <eod>