When you solve a mathematical problem, you don't just get the answer - you understand why it's the answer.

Do not try to change the outer world; change your inner world, and the outer world will adjust itself.

It is one of the superstitions of the human mind to have imagined that virginity could be a virtue.

  一切迷信的根源在于人们只关注事情成功的时候，而不关注失败，他们只记住成功，而忽视失败。

通过经验获得的东西比通过推理获得的东西更真实、更坚实。