我相信，一个真正有才华的人，是不会被埋没的。
When each day is the same as the next, it's because people fail to recognize the good things that happen in their lives every day that the sun rises.
我不认为每个人都应该成为数学家，但我确实相信许多学生没有给数学一个真正的机会。
The division of labour， so far as it can be introduced， occasions， in every art， a proportionable increase of the productive powers of labour.
The only real knowledge is self-knowledge.
即使是最坚强的灵魂，也会被爱击垮。