The first causes of motion are not to be found in matter; matter receives and transmits motion, but does not produce it. The more I observe the action and reaction of the forces of nature playing on one another, the more I see that we must always go back from one effect to another, till we arrive at a first cause in some will; for to assume an infinite succession of causes is to assume that there is no first cause. In a word, no motion which is not caused by another motion can take place, except by a spontaneous, voluntary action; inanimate bodies have no action but motion, and there is no real action without will. This is my first principle. I believe, therefore, that there is a will which sets the universe in motion and gives life to nature. This is my first dogma, or the first article of my creed.
How does a will produce a physical and corporeal action? I cannot tell, but I perceive that it does so in myself; I will to do something and I do it; I will to move my body and it moves, but if an inanimate body, when at rest, should begin to move itself, the thing is incomprehensible and without precedent. The will is known to me in its action, not in its nature. I know this will as a cause of motion, but to conceive of matter as producing motion is clearly to conceive of an effect without a cause, which is not to conceive at all.
It is no more possible for me to conceive how my will moves my body than to conceive how my sensations affect my mind. I do not even know why one of these mysteries has seemed less inexplicable than the other. For my own part, whether I am active or passive, the means of union of the two substances seem to me absolutely incomprehensible. It is very strange that people make this very incomprehensibility a step towards the compounding of the two substances, as if operations so different in kind were more easily explained in one case than in two.
The doctrine I have just laid down is indeed obscure; but at least it suggests a meaning and there is nothing in it repugnant to reason or experience; can we say as much of materialism? Is it not plain that if motion is essential to matter it would be inseparable from it, it would always be present in it in the same degree, always present in every particle of matter, always the same in each particle of matter, it would not be capable of transmission, it could neither increase nor diminish, nor could we ever conceive of matter at rest. When you tell me that motion is not essential to matter but necessary to it, you try to cheat me with words which would be easier to refute if there was a little more sense in them. For either the motion of matter arises from the matter itself and is therefore essential to it; or it arises from an external cause and is not necessary to the matter, because the motive cause acts upon it; we have got back to our original difficulty.
The chief source of human error is to be found in general and abstract ideas; the jargon of metaphysics has never led to the discovery of any single truth, and it has filled philosophy with absurdities of which we are ashamed as soon as we strip them of their long words. Tell me, my friend, when they talk to you of a blind force diffused throughout nature, do they present any real idea to your mind? They think they are saying something by these vague expressions—universal force, essential motion—but they are saying nothing at all. The idea of motion is nothing more than the idea of transference from place to place; there is no motion without direction; for no individual can move all ways at once. In what direction then does matter move of necessity? Has the whole body of matter a uniform motion, or has each atom its own motion? According to the first idea the whole universe must form a solid and indivisible mass; according to the second it can only form a diffused and incoherent fluid, which would make the union of any two atoms impossible. What direction shall be taken by this motion common to all matter? Shall it be in a straight line, in a circle, or from above downwards, to the right or to the left? If each molecule has its own direction, what are the causes of all these directions and all these differences? If every molecule or atom only revolved on its own axis, nothing would ever leave its place and there would be no transmitted motion, and even then this circular movement would require to follow some direction. To set matter in motion by an abstraction is to utter words without meaning, and to attribute to matter a given direction is to assume a determining cause. The more examples I take, the more causes I have to explain, without ever finding a common agent which controls them. Far from being able to picture to myself an entire absence of order in the fortuitous concurrence of elements, I cannot even imagine such a strife, and the chaos of the universe is less conceivable to me than its harmony. I can understand that the mechanism of the universe may not be intelligible to the human mind, but when a man sets to work to explain it, he must say what men can understand.
If matter in motion points me to a will, matter in motion according to fixed laws points me to an intelligence; that is the second article of my creed. To act, to compare, to choose, are the operations of an active, thinking being; so this being exists. Where do you find him existing, you will say? Not merely in the revolving heavens, nor in the sun which gives us light, not in myself alone, but in the sheep that grazes, the bird that flies, the stone that falls, and the leaf blown by the wind.
I judge of the order of the world, although I know nothing of its purpose, for to judge of this order it is enough for me to compare the parts one with another, to study their co-operation, their relations, and to observe their united action. I know not why the universe exists, but I see continually how it is changed; I never fail to perceive the close connection by which the entities of which it consists lend their aid one to another. I am like a man who sees the works of a watch for the first time; he is never weary of admiring the mechanism, though he does not know the use of the instrument and has never seen its face. I do not know what this is for, says he, but I see that each part of it is fitted to the rest, I admire the workman in the details of his work, and I am quite certain that all these wheels only work together in this fashion for some common end which I cannot perceive.
Let us compare the special ends, the means, the ordered relations of every kind, then let us listen to the inner voice of feeling; what healthy mind can reject its evidence? Unless the eyes are blinded by prejudices, can they fail to see that the visible order of the universe proclaims a supreme intelligence? What sophisms must be brought together before we fail to understand the harmony of existence and the wonderful co-operation of every part for the maintenance of the rest? Say what you will of combinations and probabilities; what do you gain by reducing me to silence if you cannot gain my consent? And how can you rob me of the spontaneous feeling which, in spite of myself, continually gives you the lie? If organised bodies had come together fortuitously in all sorts of ways before assuming settled forms, if stomachs are made without mouths, feet without heads, hands without arms, imperfect organs of every kind which died because they could not preserve their life, why do none of these imperfect attempts now meet our eyes; why has nature at length prescribed laws to herself which she did not at first recognise? I must not be surprised if that which is possible should happen, and if the improbability of the event is compensated for by the number of the attempts. I grant this; yet if any one told me that printed characters scattered broadcast had produced the Aeneid all complete, I would not condescend to take a single step to verify this falsehood. You will tell me I am forgetting the multitude of attempts. But how many such attempts must I assume to bring the combination within the bounds of probability? For my own part the only possible assumption is that the chances are infinity to one that the product is not the work of chance. In addition to this, chance combinations yield nothing but products of the same nature as the elements combined, so that life and organisation will not be produced by a flow of atoms, and a chemist when making his compounds will never give them thought and feeling in his crucible.67
I was surprised and almost shocked when I read Neuwentit. How could this man desire to make a book out of the wonders of nature, wonders which show the wisdom of the author of nature? His book would have been as large as the world itself before he had exhausted his subject, and as soon as we attempt to give details, that greatest wonder of all, the concord and harmony of the whole, escapes us. The mere generation of living organic bodies is the despair of the human mind; the insurmountable barrier raised by nature between the various species,