The only thing we have to fear is the censor.
我们唯一需要害怕的是审查者。
Believe that life is worth living, and your belief will help create the fact.
Happiness is not something ready-made. It comes from your own actions.
统一自然界所有力的挑战是一个多世纪以来推动理论物理学发展的动力。
Small changes in the environment can have big effects on behavior.
每一个人都应当为自己的行为负责。