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"?
经济与生态之间的平衡是现代林业的核心。
解释：礼用来推行道义，道义用来产生利益，利益用来使老百姓太平，这是治理国家的关键。
If you don't change yourself, you will be changed by others.