Marc Sagoff

The principle of natural selection is not obviously a humanitarian principle; the predator-prey relation does not depend on moral empathy. Nature ruthlessly limits animal populations by doing violence to virtually every individual before it reaches maturity[.]

Marc Sagoff, ‘Animal Liberation and Environmental Ethics: Bad Marriage, Quick Divorce’, Osgoode Law Journal, vol. 22, no. 2 (Summer, 1984), p. 299