“One reason why birds and horses are not unhappy is because they are not trying to impress other birds and horses.”
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Dale Carnegie 98
American writer and lecturer 1888–1955Related quotes

Fodor (1990). A Theory of Content and Other Essays. The MIT Press.

1754, p. 72 (n. 4)
Referring to critics
Life of Samuel Johnson (1791), Vol I

“Horses can manufacture more horses and that is one trick that tractors have never learned.”
Source: Farmer in the Sky (1950), Chapter 18, “Pioneer Party” (p. 187)