True leadership is measured by the growth of those you lead.

The grind never stops.

I believe that the testing of the student's achievements in order to see if he meets some criterion held by the teacher, is directly contrary to the implications of therapy for significant learning.

The Lisp language is designed to be extensible, and it is easy to add new features to it.

科学是一个微分方程。宗教是一个边界条件。

每个女人都应该受到尊重和尊严的对待。

I like to think of mathematics as a kind of poetry.

写作是一种逃离世界的方式，也是一种拥抱世界的方式。