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are more than natural. A more rational philosophy would doubtless see ends in nature considered as if nature were independent, and lines of development which have a natural beginning but reach far into the invisible. It is convenient, for example, to speak of the conservation of natural energy while we are not attempting to state what that energy is or what end it subserves. As a relative end in itself, nature possesses a beauty, a worth which needs no ulterior sanction. Many ideals of a mechanical and organic character doubtless reach perfection in nature. As the home of physical man, as the embodied expression of mental and social life, nature is relatively complete. The ephemeral, temporal ends attained in animal life are surely of real and almost independent worth. Quite apart from all the woes and calamities which constitute nature's darker history there is much to be said about these subordinate ends, and nature is far from existing for man's sake alone. The naturalism, the poetry and mythologies which recognise these earthly beauties are permanent possessions of human literature.

Among many other things, nature makes for variety, endurance, strength, and health as physical ends of priceless value. The fact that man has made miserable use of his opportunities should not be emphasised at the expense of the