任何严肃的教育理论都涵盖两个部分：对生活目标的理解和心理动力学的知识，即精神运动的规律。

Any serious educational theory must consist of two parts: a conception of the ends of life, and a science of psychological dynamics, i.e., of the laws of mental change.

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对锁定轨温衰减规律的探索是一项非常困难、繁琐而又十分重要、严肃的事情，尤其是从理论上进行定量分析，尚需要我们不断地进行深入的探索和研究。

It is very difficult and fussy but very important and serious to study the law of stress-free temperature attenuating, especially we should make quantificational research in theory thoroughly.

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