Michael Klaper (1947) American physician
Speech of July 19, 1985. Quoted in David Robinson Simon, Meatonomics (Conari Press, 2013), p. 193 https://books.google.it/books?id=PY0KUnaIU5AC&pg=PA193.
Source: 1915 - 1916, 100 Aphorisms', Franz Marc (1915), p. 445
Michael Klaper (1947) American physician
Speech of July 19, 1985. Quoted in David Robinson Simon, Meatonomics (Conari Press, 2013), p. 193 https://books.google.it/books?id=PY0KUnaIU5AC&pg=PA193.
“How strange that nature does not knock, and yet does not intrude!”
Emily Dickinson (1830–1886) American poet
“How many legs does a dog have, if you call a tail a leg?”
Abraham Lincoln (1809–1865) 16th President of the United States
His collected works contain no riddle about dog legs, but George W. Julian recounts Lincoln using a similar story about a calf in Reminiscences of Abraham Lincoln by distinguished men of his time (1909), p. 241: "There are strong reasons for saying that he doubted his right to emancipate under the war power, and he doubtless meant what he said when he compared an Executive order to that effect to 'the Pope’s Bull against the comet.' In discussing the question, he used to liken the case to that of the boy who, when asked how many legs his calf would have if he called its tail a leg, replied, 'Five,' to which the prompt response was made that calling the tail a leg would not make it a leg."
A very similar riddle about cow legs was also circulated by Edward Josiah Stearns' Notes on Uncle Tom's Cabin (1853), p. 46: '"Father," said one of the rising generation to his paternal progenitor, "if I should call this cow's tail a leg, how many legs would she have?" "Why five, to be sure." "Why, no, father; would calling it a leg make it one?"'
Misattributed
“Why does the eye see more clearly when asleep than the imagination when awake?”
Leonardo Da Vinci (1452–1519) Italian Renaissance polymath
The Notebooks of Leonardo da Vinci (1883), XIX Philosophical Maxims. Morals. Polemics and Speculations.
Variant: Why does the eye see a thing more clearly in dreams than with the imagination being awake?
“The animal needing something knows how much it needs, the man does not.”
Democritus Ancient Greek philosopher, pupil of Leucippus, founder of the atomic theory
Freeman (1948), p. 162
Variant: The needy animal knows how much it needs, but the needy man does not.
“How doe we create the world we want, rather than a world that just happens to us?”
Mark Kingwell (1963) Canadian philosopher
Source: The World We Want (2000), Chapter 5, The World We Want, p. 207.
Karl Marx (1818–1883) German philosopher, economist, sociologist, journalist and revolutionary socialist
Grundrisse (1857-1858)
Source: Notebook I, The Chapter on Money, p. 85.
“How does the poet speak to men with power, but by being still more a man than they?”
Thomas Carlyle (1795–1881) Scottish philosopher, satirical writer, essayist, historian and teacher
Burns.
1820s, Critical and Miscellaneous Essays (1827–1855)
“How many shots does it take before the concept ay choice becomes obsolete?”
Irvine Welsh book Trainspotting
Renton, Blowing It: Courting Disaster" (Chapter 4, Story 1).
Trainspotting (1993)