Man's skull represents the ...

Man's skull represents the same infinity for the movement of conceptions. It is equal to the universe, for in it is contained all that sees in it.
 Kazimir Malevich

Quotes from the same author

With the most primitive means the artist creates something which the most ingenious and efficient technology will never be able to create.
 Kazimir Malevich
For the Suprematist, the proper means is the one that provides the fullest expression of pure feeling and ignores the habitually accepted object. The object in itself is meaningless to him, and the ideas of the conscious mind are worthless.
 Kazimir Malevich
There is movement and movement. There are movements of small tension and movements of great tension and there is also a movement which our eyes cannot catch although it can be felt. In art this state is called dynamic movement.
 Kazimir Malevich