The first duty of a man is to think for himself.
人的首要职责是为自己思考。
All things excellent are as difficult as they are rare.
人生好比手镯……手镯上面镶着珠宝，就仿佛不时发生在我们生活里的闪光时刻……
Understanding the real lives of the poor is the first step toward designing effective policies to help them.
我不是诗人，我是一个讲故事的人。
保持安静。除此之外，心智没有任务要做，也没有念头要思考。
检验假设有效性的唯一相关标准是其预测与经验的比较。
真朋友才会当面中伤你。