In his later works Doesburg tried to destroy static expression by diagonal position of his lines. But in this way the feeling of physic equilibrium w… - Piet Mondrian

..the universal cannot be expressed purely so long as the particular obstructs the path. Only when this is no longer the case can the universal consciousness (intuition, that is) which is at the origin of all art, be rendered directly, giving birth to a purified art expression.
This, however, cannot appear before its proper time. For it is the spirit of the times that determines artistic expression, which, in turn, reflects the spirit of the times. But at the present moment, that form of art alone is truly alive which expresses our present - or future - consciousness.

A form must be of its own time if it is to be recognized: one cannot relate to what one is not or does not have – Thus all that is of the past is to be rejected.

The principle of this art [as Mondrian proposes his view on modern art] is not a negation of matter, but a great love of matter, whereby it is seen in the highest, most intense manner possible, and depicted in the artistic creation.