The only way to truly understand something is to do it yourself.

The greatest prison people live in is the fear of what other people think.

The stranger is an element of the group itself, not unlike the poor and sundry 'inner enemies'—an element whose membership within the group involves both being outside it and confronting it.

He who sacrifices freedom for security deserves neither.

体育绝不能被视为奢侈品。

在科学管理中，最重要的元素是任务观念。