唯一真正的智慧是自知无知。

地质学不会妥协，我们的标准也不应该妥协。

自满是医学进步的敌人。

I must confess that I never could see any beauty in her. Her face is too thin; her complexion has no brilliancy; and her features are not at all handsome. Her nose wants character; there is nothing marked in its lines. Her teeth are tolerable, but not out of the common way; and as for her eyes, which have sometimes been called so fine, I could never see anything extraordinary in them.