Ideas become a material force when they grip the masses.

In individuals， insanity is rare；but in groups， parties， nations， and epochs， it is the rule.

The greatest discoveries come from asking the simplest questions.

The highest possible stage in moral culture is when we recognize that we ought to control our thoughts.

Life is pleasant. Death is peaceful. It's the transition that's troublesome.

我不会让黑暗掩盖我的光芒。

The only person you should try to be better than is the person you were yesterday.

我认为最重要的事情就是对你所拥有的心存感激。