402. ’To put together in few words the whole force of what I have just said to you, I will observe that it is evident to all those who go deeply into things, that the true efficient cause of an effect must know the effect, and be aware also of the way in which it must be produced. That is not necessary when one is only the instrument of the cause, or only the passive subject of its action; but one cannot conceive of it as not necessary to a true agent. Now if we examine ourselves well we shall be strongly convinced, (1) that, independently of experience, our soul is just as little aware of what a volition is as of what an idea is; (2) that after a long experience it is no more fully aware of how volitions are formed than it was before having willed anything. What is one to conclude from that, save that the soul cannot be the efficient cause of its volitions, any more than of its ideas, and of the motion of the spirits which cause our arms to move? (Take note that no pretence is made of deciding the point here absolutely, it is only being considered in relation to the principles of the objection.)’
403. That is indeed a strange way of reasoning! What necessity is there for one always to be aware how that which is done is done? Are salts, metals, plants, animals and a thousand other animate or inanimate bodies aware how that which they do is done, and need they be aware? Must a drop of oil or of fat understand geometry in order to become round on the surface of water? Sewing stitches is another matter: one acts for an end, one must be aware of the means. But we do not form our ideas because we will to do so, they form themselves within us, they form themselves through us, not in consequence of our will, but in accordance with our nature and that of things. The foetus forms itself in the animal, and a thousand other wonders of nature are produced by a certain instinct that God has placed there, that is by virtue of divine preformation, which has made these admirable automata, adapted to produce mechanically such beautiful effects. Even so it is easy to believe that the soul is a spiritual automaton still more admirable, and that it is through divine preformation that it produces these beautiful ideas, wherein our will has no part and to which our [365] art cannot attain. The operation of spiritual automata, that is of souls, is not mechanical, but it contains in the highest degree all that is beautiful in mechanism. The movements which are developed in bodies are concentrated in the soul by representation as in an ideal world, which expresses the laws of the actual world and their consequences, but with this difference from the perfect ideal world which is in God, that most of the perceptions in the other substances are only confused. For it is plain that every simple substance embraces the whole universe in its confused perceptions or sensations, and that the succession of these perceptions is regulated by