"The world is a game, but the rules are unfair."

安全困境是国际政治的一个基本特征，因为国家增加自身安全的努力往往会降低其他国家的安全。

What a fool old Adam was. Had everything his own way; had succeeded in gaining the love of the best looking girl in the neighborhood, but yet unsatisfied with his conquest he had to eat a miserable little apple.

科学与日常生活不能也不应该被分开。