Man's Responsibility for Nature: Ecological Problems and Western Traditions

abortion action Aldo Leopold already animals argued argument attitude to nature beasts birth control Blueprint for survival century certainly Christian civilisation condemned consequences conservation conservationist contraception costs course degree Descartes destroy destruction developing countries doubt earth ecological problems ecologists economic effects enjoyment ethic example existence fact future Garrett Hardin Genesis God's human Humanae Vitae importance increase industrial infanticide J. S. Mill Kant Lake Pedder landscape large family least living London look marriage means metaphysical methods moral principles ovum particular perfect philosophy plants political pollution population control population growth posterity preservation preservationist procreation quoted rate of population reduce Roman Catholic sacred sacrifice Sand County Almanac scientific scientists sense sexual social society solution solve species Stoic suggested suppose survive technological Tertullian thing thought tion trans West Western tradition wholly wildernesses writes wrong