I have come to realise that men are not born to be free.
The probability of a response is determined by its reinforcement history.
每个数学问题都有一个解决方案;你只需要找到正确的视角。
医学的艺术在于在自然治愈疾病时逗乐病人。
人类是唯一如此的动物:他爱护他的邻居就如同爱护他自己一样,但是如果对方的宗教神学有问题,他会割断对方的喉咙。