Bertrand Russell — Warren Buffet’s Favorite Philosopher
“When a man tells you that he knows the exact truth about anything, you are safe in inferring that he is an inexact man…. It is an odd fact that subjective certainty is inversely proportional to objective certainty. The less reason a man has to suppose himself in the right, the more vehemently he asserts that there is no doubt whatever that he is exactly right.”