In one word, to draw the rule from experience, one must generalize; this is a necessity that imposes itself on the most circumspect observer.
Henri PoincareWe also know how cruel the truth often is, and we wonder whether delusion is not more consoling.
Henri PoincareLogic sometimes makes monsters. For half a century we have seen a mass of bizarre functions which appear to be forced to resemble as little as possible honest functions which serve some purpose.
Henri Poincare