自由意味着责任,这就是为什么大多数人害怕自由。
Liberty means responsibility. That is why most men dread it.
所有的暴力都包含一些人强迫另一些人,在痛苦或死亡的威胁下,做他们不想做的事。
Every mental act has its place in the economy of life.
The universe constantly surprises us, and that’s what makes science so exciting.
每本书都是作者首先要独自经历的旅程。