The whole earth will become virtuous if the nations help each other to achieve happiness.
People, since they belong to the human race, must maintain peace among themselves.
…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.
Reason is given to man in order to serve him so that he can achieve his highest perfection.