Quotes on Guesswork

A mathematician's work is mostly a tangle of guesswork, analogy, wishful thinking and frustration, and proof, far from being the core of discovery, is more often than not a way of making sure that our minds are not playing tricks.

The spirit of Christianity proclaims the brotherhood of the race and the meaning of that strong word has not been left to guesswork, but made tremendously definite - the Christian must forgive his brother man all crimes he can imagine and commit, and all insults he can conceive and utter - forgive these injuries how many times? - seventy times seven - another way of saying there shall be no limit to this forgiveness. That is the spirit and the law of Christianity.