In peace, sons bury their fathers. In war, fathers bury their sons.

The end of history will be a very sad time. The struggle for recognition, the willingness to risk one's life for a purely abstract goal, the worldwide ideological struggle that called forth daring, courage, imagination, and idealism, will be replaced by economic calculation, the endless solving of technical problems, environmental concerns, and the satisfaction of sophisticated consumer demands.

一个国家的力量在于其人民的团结。

Writing is the only profession where no one considers you ridiculous if you earn no money.

Simplicity has a way of improving performance by enabling us to better understand what we are doing.

The facts are always friendly, every bit of evidence one can acquire, in any area, leads one that much closer to what is true.

万物都存在于心中，心中充满道理，充塞宇宙的也无非是这个理。

——《在沪举办茶话会上的演说》（1916年7月17日）