To understand the mind, follow its practical consequences.

Failure is instructive. The person who really thinks learns quite as much from his failures as from his successes.

The success of a society depends on its ability to balance the demands of individual freedom with the need for social cohesion.

The best way to learn about poverty is to go out and talk to the poor themselves.

没有个人的推动，社会就会停滞。没有社会的同情，个人的推动就会消失。