"Every man has his secret sorrows which the world knows not; and often times we call a man cold when he is only sad."

True scientific progress requires both creativity and discipline.

The greatest tragedy is not to die, but to be forgotten.

当我停止进步的那天，就是我该停止比赛的日子。

The only way to be truly satisfied is to do what you believe is great work.

拼命干。