Folly is a child of power. We all know, from unending repetitions of Lord Acton’s dictum, that power corrupts. We are less less aware that it breeds folly: that the power to command frequently causes failure to think: that the responsibility of power often fades as its exercise augments.

Barbara W. Tuchman (1912-1989) American historian and author

The March of Folly: From Troy to Vietnam, ch. 1 (1984)
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See Acton.