The dead are never far from us. They're in our hearts and on our minds and they always will be.

心理学必须关注心理操作的实用性。

The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt, and the profoundest wisdom to know when it ought to be resisted, and when it be obeyed.

强调历史研究既要理解历史背景，又要保持学术批判性。