关系模型基于谓词逻辑和集合论，为数据库管理提供了坚实的数学基础。
In the writing process, the more a story cooks, the better.
The Langlands program is a challenge to the limits of human understanding.
雄心壮志是失败最后的避难所。
邪恶胜利的唯一必要条件就是好人无所作为。
我们想要一个人民可以自由的选择、犯错、持有宽容及同情心的社会。这就是我们所谓的道德社会；不是一个国家要负所有责任，而没有人须要为国家负责的社会。
In a world filled with hate, we must still dare to hope. In a world filled with anger, we must still dare to comfort. In a world filled with despair, we must still dare to dream. In a world filled with distrust, we must still dare to believe.
释义：迷惑对手，隐蔽自己，集中兵力，分散敌人。