If you paint the leaf on a tree without using a model, your imagination will only supply you with a few leaves; but Nature offers you millions, all on the same tree. No two leaves are exactly the same. The artist who paints only what is in his mind must very soon repeat himself.
Pierre-Auguste RenoirAn artist, under pain of oblivion, must have confidence in himself, and listen only to his real master: Nature.
Pierre-Auguste RenoirNothing costs so little, goes so far, and accomplishes so much as a single act of merciful service.
Pierre-Auguste Renoir