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accidental action adaptation affirmation amoeba ancient ancient philosophy animal Aristotle arthropods becoming body cause cell cinematographical complete concepts consciousness continuity contrary creates creation definite Descartes direction duration effect effort elements energy essential everything evolutionism evolved existence experience explain express external fact faculty finality function geometry glycogen human hymenoptera hypothesis idea imagine individual indivisible inert matter infinitely instinct intellect intelligence intuition Kant kind knowledge larva laws Leibniz less living material mathematical means mechanism ment metaphysics mind mobility molluscs movement nature negation nervous system object once organism original ovum pass perceive perception philosophy physical Plato Plotinus point of view positive positive science possible precisely present principle protoplasm psychical pure reality regard relation represent retina sense simple solar system space speak species Spinoza suppose tendency theory things thought true variations vegetable vertebrates vital whole word
Page 270 - ... all places as in all times, do but evidence a single impulsion, the inverse of the movement of matter, and in itself indivisible. All the living hold together, and all yield to the same tremendous push.
Page 265 - Our brain, our society, and our language are only the external and various signs of one and the same internal superiority. They tell, each after its manner, the unique, exceptional success which life has won at a given moment of its evolution. They express the difference of kind, and not only of degree, which separates man from the rest of the animal world.
Page xiii - It thus obtains a symbolism which is convenient, perhaps even necessary to positive science, but not a direct vision of its object. On the other hand, a theory of knowledge which does not replace the intellect in the general evolution of life will teach us neither how the frames of knowledge have been constructed nor how we can enlarge or go beyond them. It is necessary that these two inquiries, theory of knowledge and theory of life, should join each other, and, by a circular process, push each...
Page 87 - This impetus, sustained right 855 along the lines of evolution among which it gets divided, is the fundamental cause of variations, at least of those that are regularly passed on, that accumulate and create new species.
Page 38 - If this be true, it is no less certain that the existing world lay potentially in the cosmic vapour, and that a sufficient intelligence could, from a knowledge of the properties of the molecules of that vapour, have predicted, say the state of the fauna of Britain in 1869, with as much certainty as one can say what will happen to the vapour of the breath on a cold winter's day .... The teleological and the mechanical views of nature are not, necessarily, mutually exclusive.
Page 99 - For life is tendency, and the essence of a tendency is to develop in the form of a sheaf, creating, by its very growth, divergent directions among which its impetus is divided. This we observe in ourselves, in the evolution of that special tendency which we call our character. Each of us, glancing back over his history, will find that his...
Page 30 - Anything that is irreducible and irreversible in the successive moments of a history eludes science. To get a notion of this irreducibility and irreversibility, we must break with scientific habits which are adapted to the fundamental requirements of thought, we must do violence to the mind, go counter to the natural bent of the intellect. But that is just the function of philosophy.
Page 102 - The truth is that adaptation explains the sinuosities of the movement of evolution, but not its general directions, still less the movement itself. The road that leads to the town is obliged to follow the ups and downs of the hills; it adapts itself to the accidents of the ground; but the accidents of the ground are not the cause of the road, nor have they given it its direction.
Page 270 - They are nothing else than the little rills into which the great river of life divides itself, flowing through the body of humanity. The movement of the stream is distinct from the river bed, although it must adopt its winding course. Consciousness is distinct from the organism it animates, although it must undergo its vicissitudes.
Page 1 - The existence of which we are most assured and which we know best is unquestionably our own, for of every other object we have notions which may be considered external and superficial, whereas, of ourselves, our perception is internal and profound. What, then, do we find? In this privileged case, what is the precise meaning of the word "exist"?