“Study the old masters. Look at nature. Watch out for armpits'. [in 1956, Reinhardt is quoting Paul Cézanne here freely]”

Du Cubisme (1912)

"To the Indianapolis Clergy." The Iconoclast (Indianapolis, IN) (1883)
Context: There is also this remarkable fact: Paul quotes none of the miracles of the New Testament. He says not one word about the multitude being fed miraculously, not one word about the resurrection of Lazarus, nor of the widow’s son. He had never heard of the lame, the halt, and the blind that had been cured; or if he had, he did not think these incidents of enough importance to be embalmed in an epistle.

Tiger at the Gates (1935)

translation from Dutch, Fons Heijnsbroek, 2018
version in original Dutch / citaat van J. H. Weissenbruch, in het Nederlands: Ik herinner me, dat ik als jongen in onze museums voor de schilderijen van de oude meesters verstomd stond, zoals ze de natuur tot je lieten spreken. Als ik van iemand geleerd heb de natuur te zien dan is het van onze oude meesters. Maar het meest van de natuur-zelve.
in an interview with J.H. Rössing, at the end of his life, c. 1902; as cited in Eind goed Al goed, de carriere van J.H. Weissenbruch https://www.artsalonholland.nl/grote-meesters-kunstgeschiedenis/johan-hendrik-weissenbruch-haagse-school, by Sander Kletter

Source: posthumous, Movements in art since 1945, p. 31: (in Gorky Memorial Exhibition, Schwabacher pp. 28)

Was mich eigentlich interessiert, ist, ob Gott die Welt hätte anders machen können; das heisst, ob die Forderung der logischen Einfachheit überhaupt eine Freiheit lässt.
What I am really interested in is knowing whether God could have created the world in a different way; in other words, whether the requirement of logical simplicity admits a margin of freedom.
As translated in Max Jammer, Einstein and Religion (Princeton University Press, 1999), p. 124
What I'm really interested in is whether God could have made the world in a different way; that is, whether the necessity of logical simplicity leaves any freedom at all.
As translated in Gerald Holton, The Scientific Imagination: Case Studies (Cambridge University Press, 1978), p. xii https://books.google.com/books?id=_RU7AAAAIAAJ&pg=PR12
Attributed in posthumous publications

translation from original Dutch, Fons Heijnsbroek, 2018
(version in original Dutch / origineel citaat van Anton Mauve, in het Nederlands:) Neem toch een voorbeeld aan de Hollandse zeventiende-eeuwse meesters, we moeten kijken naar het land om ons heen zoals de oude meesters dat deden.
as cited in Anton Mauve en de Haagse School, S.F.M. de Bodt, in 'Openbaar Kunstbezit', Den Haag, 1997b, p. 30
undated quotes

On Shoeless Joe Jackson, as quoted in "The Sportlight" http://www.mediafire.com/view/mazvkq3hy6g68vp/Rice%2C%20Grantland.%20The%20Sportlight.%20The%20Daily%20Boston%20Globe.%20December%2016%2C%201932..jpg by Grantland Rice, in The Daily Boston Globe (December 16, 1932), p. 40
Context: I decided to pick out the greatest hitter to watch and study, and Jackson was good enough for me. I liked the way he kept his right foot forward, being a left-handed hitter, and his left foot back. That gave him more body and shoulder power than the average hitter has.

in a writing of Maillol, quoted in 'Aristide Maillol', ed. Andrew C. Ritchie, Albright Art Gallery N Y 1945, p. 31; as quoted by Angelo Carnafa, in 'A sculpture of interior Solitude', Associated University Presse, 1999, p. 168