The deepest problems of modern life derive from the claim of the individual to preserve the autonomy and individuality of his existence in the face of overwhelming social forces, of historical heritage, of external culture, and of the technique of life.

儿童不是知识的被动接受者，而是学习过程的积极参与者。

认为世界上只有一种真理，而自己恰好掌握了它，在我看来这是世界上一切邪恶的最深根源。

The only way to achieve the impossible is to believe it is possible.

言论自由只有在政府认为它自身安全的时候才存在。