In our reasonings concerning matter of fact， there are all imaginable degrees of assurance， from the highest certainty to the lowest species of moral evidence.
要真正了解世界，深入观察你自己的存在；要真正了解自己，对世界产生真正的兴趣。
成功不在于成为最好的，而在于在努力中保持一贯和坚持。
交易成功的关键在于情绪纪律。如果智力是关键，那么会有更多的人通过交易赚钱。
Speech is the shadow of action; action is the manifestation of speech.