一个思想的价值在于它对行为的后果。

Poor is the man whose pleasures depend on the permission of another.

心理学家必须是一个公正的观察者。

War is the father of all, and king of all; and some he has made gods, and some men; some he has made slaves, and some free.

可持续发展不仅仅是趋势，它是皮革鞣制的未来。