An animal is not sufficiently master of its sensations to follow their course throughout their successive modifications; it is not in any proper sense a witness, as man is, of the progress, of the perpetual movement and transformation of all things; nature is, for it, a series of detached pictures of which it does not seize the contrasts. When man, on the contrary, follows attentively the more or less slow evolution of things, he perceives the effacement of every fundamental difference between the animate and the inanimate, he observes a process of blind mechanical labour, which produces life in objects in appearance quite inert. Is there not something rationally profound and justifiable in the very naïveté with which he interprets nature? Poetry is often philosophy in its most penetrating form. Who has not asked himself sometimes if a puissant and hidden spring of life does not circulate unknown to us in the high mountains, in the still trees, and in the restless ocean, and if mute nature does not live in one long course of meditation upon themes unknown to us? And since even nowadays we ourselves are full of such vague doubts as that, do we imagine that it would be easy to convince one of these primitive men of his error, when he fancies that he feels the beating of what the Germans call the “heart of nature”? After all is the primitive man wrong? Everything about us does live, nothing is inanimate except in appearance, inertia is a word simply; all nature is one universal aspiration, modern science alone can measure with some approach to accuracy the activity with which all things are saturated, and show it to us, here existent in a state of diffusion, there in a state of concentration, and self-conscious, and make us acquainted with the difference between the higher organisms and the lower organisms, and between the latter and mechanisms and rudimentary groupings of bits of matter. For primitive man, to whom all these distinctions, all the gradations are impossible, there is but one thing evident, and that is that the whole of nature lives; and he naturally conceives this life on the model of his own, as accompanied by self-consciousness, by an intelligence the more astonishing in that it is mysterious. Moreover he is a man, and _humanizes_ nature; he lives in society with other men, and conceives all things in terms of social relations of friendship or of enmity. [Sidenote: And divinizes it.]