Every man has a right to his opinion, but no man has a right to be wrong in his facts.

The proletariat is the universal class, the class whose radical chains are capable of bursting asunder.

The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.

阳中的阴精本质不刚强，单独修炼一种物质会转为虚弱。

当最后一条鱼被捕捞，人类才会明白金钱不能当饭吃。