"The world is a shadow, and the shadow is a mirror."

The only way to change behavior is through manipulation of reinforcement contingencies.

书籍是镜子：你只能从中看到你内心已有的东西。

The basic laws of behavior are the same for all organisms.

The world needs more forests, not fewer.

真正的问题不是为什么有些人懒惰，而是为什么有些人在几乎必然导致懒惰的条件下却不懒惰。

经验不过是人们给自己的错误取的名字。