Color helps to express light, not the physical phenomenon, but the only light that really exists, that in the artist's brain.
Henri MatisseSlowly I discovered the secret of my art. It consists of a meditation on nature, on the expression of a dream which is always inspired by reality. With more involvement and regularity, I learned to push each study in a certain direction. Little by little the notion that painting is a means of expression asserted itself, and that one can express the same thing in several ways. Exactitude is not truth, Delacroix liked to say.
Henri Matisse