The contour should come last, only a very experienced eye can place it rightly. - Eugène Delacroix

Proportion applies to sculpture as to painting; perspective determines the contour; chiaroscuro gives relief through the disposition of lights and shadows in their relationship with the background; color gives the appearance of life.. .The colorists, the men who unite all the phases of painting, have to establish, at once and from the beginning, everything that is proper and essential to their art. They have to mass things in with color, even as the sculptor does with clay, marble or stone; their sketch, like that of the sculptor, must also render proportion, perspective effect, and color.

Beavers will invent a new way of building dams before architects accept a new method or a new style in their art (23 August 1854).

For a man who is sensitive to nature, happiness consists in expressing nature. How infinitely happy, then, is the man who reflects nature like a mirror without being aware of it, who does the thing for love of it and not from any pretensions to take first place. This noble unself-consciousness is what we find in all truly great men, in the founders of the arts. I picture the great Poussin, in his retreat, delighting in the study of the human heart.. ..I picture Raphael in the arms of his mistress, turning from La Fornarina to paint his Saint Cecilia.. ..I am only too well aware that I am far not only from their divine spirit, but even from their modest simplicity...