I do not write for myself alone, but for those who cannot speak.

一本好的图画书是艺术家与孩子之间的无声对话。

The key is to enjoy the journey, not just the destination.

The principle goal of education in the schools should be creating men and women who are capable of doing new things, not simply repeating what other generations have done.

The concept of NP-completeness has provided a powerful tool for understanding the complexity of computational problems.