[T]reat Nature by the sphere, the cylinder and the cone. . . .

For an impressionist to paint from nature is not to paint the subject, but to realize sensations

Painting from nature is not copying the object; it is realizing one's sensations.

Art is a harmony parallel with nature.

I lack the magnificent richness of color that animates nature.

Painting from nature is not copying the object; it is realizing one's sensations.