义，就是利。

Love is free; to promise for ever to love the same woman is not less absurd than to promise to believe the same creed.

Simple can be harder than complex: You have to work hard to get your thinking clean to make it simple.

科学的历史是新知识生产的历史。

文学的力量在于它能够让我们看到那些被遮蔽的真相。