I must be more sensible and realize that at my age, illusions are hardly permitted and they will always destroy me.

Everything in nature takes its form from the sphere, the cone and the cylinder.

I am more a friend of art than a producer of painting.

The clear French landscape is as pure as a verse of Racine.

Is it the factitious and the conventional that most surely succeed on earth and in the course of life?

I am the primitive of the method I have invented.

When I start thinking, all is lost.