预测未来的最好方法就是创造未来。

Happiness depends upon ourselves.

The difference between a policy and a crusade is that a policy is judged by its results, while a crusade is judged by how good it makes its crusaders feel.

不要信任所有人，但要信任有价值的人；前者是愚蠢的，后者是谨慎的标志。

我所达到的丰富性来自自然，那是我灵感的源泉。