Thomas Hobbes (1588–1679) included a discussion of natural rights in his moral and political philosophy. Hobbes' conception of natural rights extended from his conception of man in a "state of nature". Thus he argued that the essential natural (human) right was "to use his own power, as he will himself, for the preservation of his own Nature; that is to say, of his own Life; and consequently, of doing any thing, which in his own judgement, and Reason, he shall conceive to be the aptest means thereunto."