Come across Locke’s idea of property. He included human lives…
Locke argues that man once existed in a dog-eat-dog “state of Nature,” like Hobbes’s “war of each against all.” Instead of subjecting himself to the will of one man—the tyrannical monarch of Hobbes’s Leviathan —“he seeks out and is willing to join in society with others who are already united, or have a mind to unite for the mutual preservation of their lives, liberties, and estates, which I call by the general name—property .”