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.

做伟大工作的唯一途径就是热爱你所做的事。

旅程本身就是奖励。

如果说一个人可以为了道德而自我克制的话，那他绝对无法忍受他所钟爱的人的轻蔑。