"写作是一种孤独的职业，但孤独是作家的最好朋友。"

The essence of cryptography is to allow communication in the presence of adversaries.

Learning is any change in a system that produces a more or less permanent change in its capacity for adapting to its environment.

生活对我们任何人来说都不容易。但那又怎样？我们必须有毅力，最重要的是对自己有信心。我们必须相信我们在某方面是有天赋的，而且这个目标必须实现。