The actions of men are the best interpreters of their thoughts.

There are unknown forces in nature; when we give ourselves wholly to her, without reserve, she lends them to us; she shows us these forms, which our watching eyes do not see, which our intelligence does not understand or suspect.

我不是因为快乐而歌唱，我歌唱是因为我快乐。

  有些书应该只是尝试一下，有些应该被吸收，而有极少数书应该被咀嚼和消化。

I can resist everything except temptation.