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.

The test of a first-rate intelligence is the ability to hold two opposed ideas in mind at the same time and still retain the ability to function.

做出伟大工作的唯一方法就是热爱你所做的事情。

There's a phrase in Buddhism， 'Beginner's mind'.It's wonderful to have a beginner's mind.