有时帮助穷人的最好方式是给他们现金，让他们自己决定如何使用它。

The right of nature... is the liberty each man hath, to use his own power, as he will himself, for the preservation of his own nature; that is to say, of his own life.

心理学必须是一门观察的科学，而非推测。

最好的投资是投给那些有愿景并有能力执行的人。