But man is not on that account isolated in nature: "As the smallest grain of dust forms part of our entire solar system, and is involved along with it in this undivided downward movement which is materiality itself, so all organised beings from the humblest to the highest, from the first origins of life to the times in which we live, and in all places as at all times, do but demonstrate to our eyes a unique impulse contrary to the movement of matter, and, in itself, indivisible. All living beings are connected, and all yield to the same formidable thrust. The animal is supported by the plant, man rides the animal, and the whole of humanity in space and time is an immense army galloping by the side of each of us, before and behind us, in a spirited charge which can upset all resistance, and leap many obstacles, perhaps even death." ("Creative Evolution", pages 293-294.) We see with what broad and far-reaching conclusions the new philosophy closes. In the forcible poetry of the pages just quoted its original accent rings deep and pure. Some of its leading theses, moreover, are noted here. But now we must discover the solid foundation of underlying fact. Let us take first the fact of biological evolution. Why has it been selected as the basis of the system? Is it really a fact, or is it only a more or less conjectural and plausible theory? Notice in the first instance that the argument from evolution appears at least as a weapon of co-ordination and research admitted in our day by all philosophers, rejected only on the inspiration of preconceived ideas which are completely unscientific; and that it succeeds in the task allotted to it is doubtless already the proof that it responds to some part of reality. And besides, we can go further. "The idea of transformism is already contained in germ in the natural classification of organised beings. The naturalist brings resembling organisms together, divides the group into sub-groups, within which the resemblance is still greater, and so on; throughout the operation, the characteristics of the group appear as general themes upon which each of the sub-groups executes its particular variations. "Now this is precisely the relation we find in the animal world and in the vegetable world between that which produces and what is produced; on the canvas bequeathed by the ancestor to his posterity, and possessed in common by them, each broiders his original pattern." ("Creative Evolution", pages 24-25.)