You have to be willing to challenge the status quo if you want to make real progress.

死者是看不见的，但他们并不缺席。

There is no perfect knowledge which can be entitled ours, that is innate; none but what has been obtained from experience.

The best way to predict the future is to invent it.

如果一个国家期望在国民无知的情况下却拥有自由，那么这种期望无论在历史上，还是未来都绝不会实现。如果我们打算抵御无知和捍卫自由，每位美国人都有责任了解一件公共事务的来龙去脉。

The work of art is a mirror of the soul.

艺术不是一件东西；它是一种方式。