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.

每本书都有一个灵魂，是写它的人和读它并梦想它的人的灵魂。

永远不要低估“无用”的基础研究的重要性。

To teach how to live without certainty and yet without being paralyzed by hesitation is perhaps the chief thing that philosophy， in our age， can do for those who study it.