It’s not the strongest of the species that survive, nor the most intelligent, but the one most responsive to change.

获得自由的唯一方式是服务。

书籍是通往其他视角的窗户。

Life is full of uncertainties, and that is what makes it interesting.

真正的幸福来自于内心的平静。

We begin with the hypothesis that any subject can be taught effectively in some intellectually honest form to any child at any stage of development.