The laws of physics are universal, but our understanding of them is constantly evolving.
Intelligence is the ability to predict the future based on past experience.
我们生活在神话之中,有时甚至意识不到这一点。
一个不以其历史为荣的国家永远无法创造历史。
严厉的家庭没有凶悍的奴仆,而慈爱的母亲却会有败家的儿子。