最好的学习方式就是从错误中吸取教训。
Mathematics is an art, and as an artist, you have to be honest with yourself.
智者知道如何拥有,而不仅仅知道如何获得。
The important thing in science is not so much to obtain new facts as to discover new ways of thinking about them.
The probability of a response is determined by its reinforcement history.
真相很少是简单的,而且往往比我们对自己说的谎言更痛苦。