Mathematics is the language in which the universe writes its deepest secrets.
有两样东西,人们越是经常持久地对之凝神思索,它们就越是使内心充满常新而日增的惊奇和敬畏:我头上的星空和我心中的道德律。
The universe is not outside of you. Look inside yourself; everything that you want, you already are.
The only limits that exist are the ones you place on yourself.