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形式化方法的美在于它们能够提供关于系统正确性的绝对确定性。
The beauty of formal methods lies in their ability to provide absolute certainty about the correctness of a system.
The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.
孩子从书中学到的最重要的事情是他们很重要。
The world is full of magical things patiently waiting for our wits to grow sharper.