理解心灵需要理解符号如何根植于感知和行动。

A teacher must have a healthy body, the skills of a farmer, the mind of a scientist, the interest in art, and the spirit of social reform.

仅仅活着是不够的……一个人必须有阳光、自由和一朵小花。

What is the difference between a Turing machine and the modern computer? It's the same as that between Hillary's ascent of Everest and the establishment of a Hilton hotel on its peak.

自守表示的研究是数学抽象之美的反映。

未来不是我们进入的，而是我们创造的。

The most important thing in a story is not what happens, but why it happens.