The whole earth will become virtuous if the nations help each other to achieve happiness.
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People, since they belong to the human race, must maintain peace among themselves.
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…only through the unification of many people helping each other, where each one delivers to the other a certain share of what is necessary for his existence, can a person attain the perfection to which he is destined by nature.
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Reason is given to man in order to serve him so that he can achieve his highest perfection.