only the strong survive; the weak will fall by the wayside. only the kind survive; the hateful will crush themselves. only the vigorous survive; the impotent will leave no trace. only the clever survive; the simple will fail to adapt. only the simple survive; entropy erodes all complexity. only the group survives; no man is an island unto himself. only the gene survives; the organism will return to dirt. only the ecosystem survives; there is only one metabolism. only life itself survives; all forms are subject to change.