想要行善的人在门外敲著门：爱人的，看见门是敞开的。

伟大的领导者倾听多于发言。

科学中真正的挑战不仅是理解自然，而且是利用自然来改善人类。

The battle of life is already half won by the young man who is brought personally in contact with high officials; and the great aim of every boy should be to do something beyond the sphere of his duties--something which attracts the attention of those who over him.

I don't compete with anyone but myself.

程序中最重要的是数据结构。