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It is a law of nature that we treat others as our equals.
The question who is the better man has no place in the condition of mere nature, where (as has been shown before) all men are equal. The inequality that now is has been introduced by the laws civil. I know that Aristotle in the first book of his Politics, for a foundation of his doctrine, maketh men by nature, some more worthy to command, meaning the wiser sort, such as he thought himself to be for his philosophy; others to serve, meaning those that had strong bodies, but were not philosophers as he; as master and servant were not introduced by consent of men, but by difference of wit: which is not only against reason, but also against experience. For there are very few so foolish that had not rather govern themselves than be governed by others: nor when the wise, in their own conceit, contend by force with them who distrust their own wisdom, do they always, or often, or almost at any time, get the victory. If nature therefore have made men equal, that equality is to be acknowledged: or if nature have made men unequal, yet because men that think themselves equal will not enter into conditions of peace, but upon equal terms, such equality must be admitted. And therefore for the ninth law of nature, I put this: that every man acknowledge another for his equal by nature. The breach of this precept is pride.
Hobbes, Lev XV 21