One of the posters here used to use a quote from "Denny Crane" (William Shatner's character) in his sig.

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“The only thing necessary for the triumph of evil is for good men to do nothing” - Edmund Burke

So in the Libyan fable it is told
That once an eagle, stricken with a dart,
Said, when he saw the fashion of the shaft,
“With our own feathers, not by others’ hands,
Are we now smitten.” Æschylus