所有科学的统一性仅在于其方法，而不在于其材料。

墙是最古老也是最革命的建筑元素。

I never saw a wild thing sorry for itself. A small bird will drop frozen dead from a bough without ever having felt sorry for itself.

No one is an artist unless he carries his picture in his head before painting it.

如果行善不是发自内心，那就不会长久。比如被捐款、被做义工等等，都是一锤子买卖，因为不是他自愿的。