The phrase "such folly" means an action or behavior that is really foolish or stupid.
Sentences with «such folly»
Those who were there should tell those who were not there, the consequences of such folly. (nigeriapoliticsonline.com)
It illustrates our enduring credulity, covering such follies as alchemy, financial bubbles, the Crusades, fortune - telling, false prophesy, witchcraft, and witch hunts. (firstthings.com)
The problem, of course, is that such folly clothes us no better than the fig leaves used in Eden. (nakedpastor.com)