From this necessary fact comes the ultimate decay of all creeds or philosophic formulæ. Throughout the ages science and philosophy have been in conflict. Science is the same to all minds capable of grasping its conclusions. Philosophy changes with the point of view. It is the evanescent perspective in which the facts and phenomena of the universe are seen. This can never be the same under changing times and conditions. With the larger knowledge of to-morrow, there will be large modifications in the accepted philosophy of evolution. Each succeeding generation will give to the applications of the laws of organic life a different philosophical expression. II. WHAT EVOLUTION IS NOT. In these four senses the word evolution is used with some degree of accuracy. But in the current literature of the day the word has many other meanings, some of them very far from any just basis. Some things which evolution is not we may here notice briefly. Evolution is not a theory that "man is a developed monkey." The question of the immediate origin of man is not the central or overshadowing question of evolution. This question offers no special difficulties in theory, although the materials for exact knowledge are in many directions incomplete. Homologies more perfect than those connecting man with the great group of monkeys could not exist. These imply the blood-relationship of the human race with the great host of apes and monkeys. As to this there can be no shadow of a doubt. And as similar homologies connect man with all members of the group of mammals, similar blood-relationship must exist. And homologies, less close but equally unmistakable, connect all backboned animals one with another; and the lowest backboned types are closely joined to worm-like forms not usually classed as vertebrates. It is perfectly true that, with the higher or anthropoid apes, the relations with man are extremely intimate. But man is not simply "a developed ape." Apes and men have diverged from the same primitive stock, apelike, manlike, but not exactly the one or the other. No apes or monkeys now extant could apparently have been ancestors of primitive man. None can ever "develop" into man. As man changes and diverges, race from race, so do they. The influence of effort, the influence of surroundings, the influence of the sifting process of natural selection, acts upon them as it acts upon man.