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.

I'm not afraid of losing, I'm afraid of not giving my best.

——《在山西实业界学界及各党派欢迎会的演说》（1912年9月20日）

In mathematics, the journey is often more important than the destination.

人生起落无常，低谷时别放弃。