“Every work of art is the child of its age and, in many cases, the mother of our emotions. It follows that each period of culture produces an art of its own which can never be repeated. Efforts to revive the art-principles of the past will at best produce an art that is still-born. It is impossible for us to live and feel, as did the ancient Greeks. In the same way those who strive to follow the Greek methods in sculpture achieve only a similarity of form, the work remaining soulless for all time. Such imitation is mere aping. Externally the monkey completely resembles a human being; he will sit holding a book in front of his nose, and turn over the pages with a thoughtful aspect, but his actions have for him no real meaning.”

Source: Practical Pictorial Photography, 1898, Printing the picture and controlling its formation, p. 90

Small Houses: Their Economic Design and Construction (1922)
Context: Why can there not be a new art founded on the only principle which can produce great art—the principle that art is the interpretation or extraction of the essence of beauty in nature, and all else is secondary?<!-- Introduction

quoted by Albert Frederick Calvert, in Goya; an account of his life and works; publisher London J. Lane, 1908; as quoted in Francisco Goya, Hugh Stokes, Herbert Jenkins Limited Publishers, London, 1914, pp. 355-377
Goya wrote this inscription upon a later copy of the etching-plate Capricho no. 43
1790s

near Verdun, 1915]
Source: 1915 - 1916, 100 Aphorisms', Franz Marc (1915), p. 446

What then must we do? (1886)

'A New Realism', p. 17
1940's, A New Realism', 1943-1945

The Encyclopædia Britannica, 11th edn. (Cambridge: Cambridge University Press, 1910-11) vol. 17, p. 268.
Criticism

Source: Conversations with Judith Cladel (1939–1944), p. 407