解决复杂问题的关键是提出正确的因果问题。

The rule, or measuring rod, which the behaviorist puts in front of him always is: Can I describe this bit of behavior I see in terms of "stimulus and response"?

The heart of the educator must be a living flame, a fire that can ignite the souls of the young.

The only way to achieve the impossible is to believe it is possible.

因害怕文字狱而避开，著书只是为了谋生。

野外的规则是适者生存。你必须强壮、聪明、适应力强才能生存下来。