Answer:
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Explanation: The 40 Principal Doctrines of the Epicureans taught that "in order to obtain protection from other men, any means for attaining this end is a natural good" (PD 6). They believed in a contractarian ethics where mortals agree to not harm or be harmed, and the rules that govern their agreements are not absolute (PD 33), but must change with circumstances (PD 37-38). The Epicurean doctrines imply that humans in their natural state enjoy personal sovereignty and that they must consent to the laws that govern them, and that this consent (and the laws) can be revisited periodically when circumstances change.[11]
The Stoics held that no one was a slave by nature; slavery was an external condition juxtaposed to the internal freedom of the soul (sui juris). Seneca the Younger wrote:
It is a mistake to imagine that slavery pervades a man's whole being; the better part of him is exempt from it: the body indeed is subjected and in the power of a master, but the mind is independent, and indeed is so free and wild, that it cannot be restrained even by this prison of the body, wherein it is confined.[12]
Of fundamental importance to the development of the idea of natural rights was the emergence of the idea of natural human equality. As the historian A.J. Carlyle notes: "There is no change in political theory so startling in its completeness as the change from the theory of Aristotle to the later philosophical view represented by Cicero and Seneca.... We think that this cannot be better exemplified than with regard to the theory of the equality of human nature."[13] Charles H. McIlwain likewise observes that "the idea of the equality of men is the profoundest contribution of the Stoics to political thought" and that "its greatest influence is in the changed conception of law that in part resulted from it."[14] Cicero argues in De Legibus that "we are born for Justice, and that right is based, not upon opinions, but upon Nature.
