First, what is the supreme principle of morality?

第一，什么是道德的最高原则？

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What is the supreme principle of morality?

什么是道德的最高原则？

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The practical principle of morality education should be stuck to.

坚持道德教育方法的实践性原则。

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The practical principle of morality education should be stuck to.

坚持道德教育方法的实践性原则。

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