If a man will begin with certainties， he shall end in doubts； but if he will be content to begin with doubts， he shall end in certainties.

我不会让别人的意见成为我的现实。

Psychology must be a science of functions, not just a science of facts.

The first fruit of this imagination - and the first lesson of the social science that embodies it - is the idea that the individual can understand his own experience and gauge his own fate only by locating himself within his period, that he can know his own chances in life only by becoming aware of those of all individuals in his circumstances.

幸福的关键是感恩。

"To write a biography is to walk in another's shoes, to see the world through their eyes."