A mathematician is a person who can find analogies between theorems; a better mathematician is one who can see analogies between proofs and the best mathematician can notice analogies between theories.

唯一比外星人更让我害怕的是没有外星人。我们不能是创造物中最好的。我祈祷我们不是全部。如果是这样，我们就麻烦大了。