Celebrate your successes. Find some humor in your failures.

When a person realizes he has been deeply heard, his eyes moisten. I think in some real sense he is weeping for joy. It is as though he were saying, "Thank God, somebody heard me. Someone knows what it's like to be me."

Laws that have not their basis in nature are useless.

可能近似正确（PAC）学习的概念在计算学习理论中具有基础性意义。

自然是最好的向导，追随她的人必定不会犯错。