问题不是，它们能否思考？也不是，它们能否言语？而是，它们能否受苦？

You’ve got to have models in your head. And you’ve got to array your experience—both vicarious and direct—on this latticework of models. You may have noticed students who just try to remember and pound back what is remembered. Well, they fail in school and in life. You’ve got to hang experience on a latticework of models in your mind.

The concept of nondeterminism in computation is one of the most important ideas in computer science.

译文：人的福分，并不是靠外在的条件和环境得来的，而是取决于自己内心的修养和行为。只有把握好自己的内心，才能获得真正的幸福和成功。