"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."
对付一个不自由的世界,唯一的方法就是变得如此绝对自由,以至于你的存在本身就是一种反叛。
密码学的目标是使破解系统的成本超过受保护信息的价值。
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。
The Worldly Hope men set their Hearts upon Turns Ashes—or it prospers; and anon, Like Snow upon the Desert's dusty Face, Lighting a little hour or two—is gone.