Externality When I'm figuring out how much effort to contribute to this firm I don't take into account that other half of profits that goes to you.

外部性,当我计算要为公司付出多少时,我没考虑到利润的一半会归你所有

耶鲁公开课 - 博弈论课程节选

You remember he's written his father in "Ad Patrem" that the trade, the vocation of poetry -- it may be homely and slighted in his father's eyes, but it was of course worth all of Milton's time, all of Milton's uncessant care and investment.

他在写给父亲的Ad，Patrem中说，写诗这个职业在父亲看来或许,简单无趣，却值得弥尔顿付出所有的时间，精力，和投资。

耶鲁公开课 - 弥尔顿课程节选