对幸福的追寻是不幸福的主要原因之一。

A man's life is limited, but service to the people is infinite.

宇宙不仅比我们想象的更奇怪，它比我们能想象的还要奇怪。

Separate the processes of creation from improving. You can’t write and edit， or sculpt and polish， or make and analyze at the same time. If you do， the editor stops the creator. While you invent， don’t select. While you sketch， don’t inspect. While you write the first draft， don’t reflect. At the start， the creator mind must be unleashed from judgement.

Legal obligations are not merely moral obligations backed by sanctions.

The world is in a constant state of flux. Nothing remains the same from one moment to the next. You can never step into the same river twice.