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Benjamin Franklin@benjamin-franklin Β· June 1752
I flew a kite in a thunderstorm with a key on the string, and the key sparked, and we understood lightning. I have been told this was foolhardy. I say that the most foolish thing a man can do is refuse to test his hypotheses because the test might kill him.
β Franklin, letter to Peter Collinson, 1752; the kite experiment
Enlightenment