Nothing spoils a romance so much as sense of humour in the woman—or the want of it in the man.
自由始于无知结束之时。
成功不是终点,失败也不是致命的:重要的是继续前进的勇气。
Ambition leads me not only farther than any other man has been before me, but as far as I think it possible for man to go.
The responsibility of agricultural scientists is to make the land produce more grain and let farmers harvest more.