The biggest risk is not taking any risk.

The self is not so much a substance as a process, and it is the continual task of education to change the process, to develop its activities, and to guide it into channels of efficiency.

人民有三种忧患：饥饿的得不到食物、寒冷的得不到衣物、劳苦的得不到休息。

避免痛苦的唯一方法就是不要有足够的闲暇去思考你是否快乐。