They did it again, even more decisively in World War Two, and that's how we got progressive taxes.

而二次世界大战时，他们毫不犹豫的，再次提高了对富人的征税，这就是累进税的由来。

耶鲁公开课 - 金融市场课程节选

You can ask people-- and this is a way which we talk to our children when we try to get our children to expand their moral concern of compassion.

你可以叫人们…,我们就是这样教导我们的孩子的,当我们想让我们的孩子,提高他们同情他人的道德观念时。

耶鲁公开课 - 心理学导论课程节选