决策的质量不是由结果来衡量，而是由做出决策的过程来衡量。

LISP程序员知道一切的价值，但是却一无所获。

我们的教学方法只有一个，就是必须维持孩子们的高度兴趣和强烈持续的注意力。

"Traveling is a brutality. It forces you to trust strangers and to lose sight of all that familiar comfort of home and friends. You are constantly off balance. Nothing is yours except the essential things: air, sleep, dreams, the sea, the sky - all things tending towards the eternal or what we imagine of it."

情感不需要复杂的解释——有时一笔画就能传达一切。