死亡是唯一真正严肃的哲学问题。
Death is the only truly serious philosophical problem.
Confidence is not innate, it is cultivated slowly.
No man, for any considerable period, can wear one face to himself and another to the multitude, without finally getting bewildered as to which may be the true.
每个人都有不为世人所知的秘密悲伤；很多时候，我们称一个人冷漠，而他只是悲伤。
Profit without purpose is chemistry without catalysts - possible, but painfully slow and inefficient.
有时最艰难的旅程是你独自走的那段。