It is only shallow peoplewho require years to get rid of an emotion. A man who is master of himself, can end a sorrow as easily as he can invent a pleasure.
逻辑学研究不仅仅是关于正确推理，而是关于思想的解放。
旧梦是好梦，没有实现，但是我很高兴我有过这些梦。
Success is built on a culture of continuous learning and adaptation.
No man is free who is not a master of himself.
A fool who knows he is a fool is for that very reason a wise man. The fool who thinks he is wise is the one to be called a fool.
所有发生过一次的事物都不会再发生。但是所有发生过两次的事物必定会第三次发生。