An expert is a person who has made all the mistakes that can be made in a very narrow field.

心理学理论的检验标准是其对生活的适用性。

War is an ugly thing， but not the ugliest of things； the decayed and degraded state of moral and patriotic feeling which thinks that nothing is worth war is much worse.

Prudent operation is not conservatism, but responsibility to customers and shareholders.

我坚持我所相信的，不在乎别人怎么想。