家庭是一个生产人力资本的小工厂。

比起知识本身，我对能用知识做什么更感兴趣。

教育者必须是一位心理学家，以便理解儿童。

An eye for an eye will only make the whole world blind.

我想发现自己，我出生的原因，以及生命的意义。

生命、自由和共同礼仪的最坏敌人是完全的无政府状态；它们的第二坏敌人是完全的权力。

To be a philosopher is not merely to have subtle thoughts, nor even to found a school, but so to love wisdom as to live according to its dictates.

The measure of a good book is whether it makes you think, feel, and see the world differently.