The formation of society serves not only for defensive purposes, but is also very useful, and, indeed, absolutely necessary, as rendering possible the division of labor. If men did not render mutual assistance to each other, no one would have either the skill or the time to provide for his own sustenance and preservation: for all men are not equally apt for all work, and no one would be capable of preparing all that he individually stood in need of. Strength and time, I repeat, would fail, if every one had in person to plow, to sow, to reap, to grind corn, to cook, to weave, to stitch and perform the other numerous functions required to keep life going; to say nothing of the arts and sciences which are also entirely necessary to the perfection and blessedness of human nature.