The sky is the limit.

"To define is to limit."

The deterioration of every government begins with the decay of the principles on which it was founded.

不要浪费危机和灾难。没有问题，就没有进步。

最大的智慧就是知道自己。

没有自由的安全，叫做监狱。

人生短暂，不值得心怀怨恨。

Philosophy is the discipline that forces us to confront the questions we would most like to avoid.

最好的故事是那些能引起孩子和成人共鸣的故事。