The world is a stage, but most of us are just stagehands.
世界是一个舞台,但我们大多数人只是舞台工作人员。
关键不在于古代的服饰与古代的语言,况且你只是效法周朝而没有效法夏朝,你所谓的古代还不是真的古代。 
Every problem in mathematics is an opportunity to learn something new.