The practice of arithmetic tells us the principle of arithmetic, not just memory and continuous calculus.
数算练习告诉我们算术运算的原理，而不是单单的记忆和不断演算。
"We are all in the gutter, but some of us are looking at the stars."
艺术不必有任何意义，它只需要对你有意义。
任何一个时代的统治思想始终都不过是统治阶级的思想。
解释：人的命运是天注定的，人不能去改变。