“Men are not hang'd for stealing Horses, but that Horses may not be stolen.”
Of Punishment.
Political, Moral, and Miscellaneous Reflections (1750), Political Thoughts and Reflections
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George Savile, 1st Marquess of Halifax 65
English politician 1633–1695Related quotes

“3031. It is Wit to pick a Lock, and steal a Horse; but it is Wisdom to let it alone.”
Compare Poor Richard's Almanack (1735) : The cunning man steals a horse, the wise man lets him alone.
Introductio ad prudentiam: Part II (1727), Gnomologia (1732)

1754, p. 72 (n. 4)
Referring to critics
Life of Samuel Johnson (1791), Vol I
“MAY THE FORCE—”
“—FEED YOUR HORSE!”
Source: The Coyote Kings of the Space-Age Bachelor Pad (2004), Chapter 4 “The Coyote Kings vs. the Whyte Wolves” (p. 31)

Address to the Annual Dinner of the Canadian Press, Toronto, April 18, 1956
Speaking Of Canada - (1959)

“It's the same with men as with horses and dogs, nothing wants to die.”

“When people see a strong horse and a weak horse, by nature they will like the strong horse.”
Video interview, quoted in Analyzing Leaders, Presidents and Terrorists by Diane E. Holloway page 325 https://books.google.co.uk/books?id=Jc7CY1yV1g8C&pg=PA325, with NPR transcript https://www.npr.org/news/specials/response/investigation/011213.binladen.transcript.html (9 November 2001)
2000s, 2002