形式化方法不是银弹,但它们是追求可靠系统的重要工具。
In a state, the liberty of one citizen is a menace to the others.
In a world of universal deceit, telling the truth is a revolutionary act.
宇宙不仅比我们想象的更奇怪,而且比我们能够想象的更奇怪。