You are too generous to trifle with me. If your feelings are still what they were last April, tell me so at once. My affections and wishes are unchanged, but one word from you will silence me on this subject forever.

NP完全性的概念为理解计算问题的复杂性提供了一个强大的工具。

圣贤的千言万语，只是希望人们将已经放纵的心收回来，约束它使它回归，重新回到自身，自然能够向上进步。

诚信是所有商业关系的基础。