Nothing is art if it does not come from nature.

The straight line belongs to men, the curved one to God.

Color in certain places has the great value of making the outlines and structural planes seem more energetic.

God, or Nature.

-- Benedictus de Spinoza

For truly art lies hidden in nature; whoever can draw it out possesses it.

-- Albrecht Dürer

The secret of art is to correct nature.

-- Sandro Botticelli

I do not copy nature; I reveal it.

-- Caravaggio

Treat nature by the cylinder, the sphere, the cone.

-- Paul Cézanne

I invent nothing; I rediscover.

-- Auguste Rodin