The auditory perception is not sufficient for our knowledge of the world; it does not have vastness.

Our understanding is correlative to our perception.

In this movement of colors I find the essence, which does not arise from a system, or an a priori theory.

The idea of the vital movement of the world and its movement is simultaneity.

The eye is the most refined of our senses, the one which communicates most directly with our mind, our consciousness.

It is this research into pure painting that is the problem at the present moment. I do not know any painters in Paris who are really searching for this ideal world.