学习在于改变介于刺激和反应之间的某些中介过程。

The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.

解释：才华有高下之分，没有古今之别；文章有真实、虚伪之差，没有新旧之异。

Games are a combination of art and technology—neither can be neglected.

宇宙的运动是永恒的。