物理学的美丽在于它能够用如此简单而优雅的数学来描述宇宙。
I don’t write for the reader; I write for myself.
The purpose of morality is to teach you, not to suffer and die, but to enjoy yourself and live.
真正的冒险不在外面,而在内心。
The highest possible stage in moral culture is when we recognize that we ought to control our thoughts.