I once prayed the Lord to be allowed to talk with the disciples of Aristotle, and at the same time with the disciples of Descartes and those of Leibnitz, in order to learn what opinions they held on the interplay between the soul and the body. My prayer was answered by the appearance of nine men, three Aristotelians, three Cartesians and three Leibnitzians. They stood round me, the admirers of Aristotle on the left, the followers of Descartes on the right, and the supporters of Leibnitz behind me. A long way off, and separated by gaps, were to be seen three men apparently wearing laurel-wreaths; and the perception flowing in from heaven made me aware that these were the actual champions or founders of the schools. Another man stood behind Leibnitz holding on to the sleeve of his robe; I was told that he was Wolff**.

[2] The nine men on seeing one another began with polite greetings and conversation. But soon afterwards a spirit rose up from the underworld carrying a torch in his right hand, which he shook in their faces. This made them three by three to become enemies and they glowered at one another; for they were gripped by a desire to quarrel and dispute.

The Aristotelians, who were also Schoolmen***, began by saying: 'Anyone can see that objects flow into the soul by means of the senses, like anyone entering a room through the door, and that what the soul thinks depends upon the inflow. When a lover sees a pretty girl or his bride, does not his eye sparkle and transmit love for her to the soul? When the miser sees bags full of money, is not every one of his senses inflamed with longing from them, and as a result he transmits this to the soul, exciting a desire to possess them? When some haughty person hears himself being praised by another, does he not prick up his ears, and they transmit the compliments to the soul? The bodily senses are like fore-courts offering the only way in to the soul, These and countless similar examples must lead one to conclude that the inflow is from nature, in other words, physical.'

[3] On hearing this the Cartesians clapped their fingers to their brows, and now took them away to say: 'Dear, dear, you are speaking from appearances. Are you not aware that it is not the eye which loves a girl or a bride, but the soul? Likewise, the bodily sense does not desire the money in the bag of itself, but under the control of the soul. Likewise, neither do the ears in any other sense scoop up the compliments paid by toadies. Surely it is perception which produces sensation? And perception is a function of the soul, not of an organ. Tell us, if you can, what it is other than thought which makes the tongue and the lips speak? What is it but the will that makes the hands work? Thought and will are functions of the soul. So what is it but the soul which makes the eye see, the ears hear, and the remaining sense-organs feel, pay attention and notice? These and countless other examples allow everyone, whose wisdom goes beyond bodily sense-impressions, to conclude that there is no inflow from the body into the soul, but from the soul into the body. We call this incidental inflow, or spiritual inflow.'

[4] On hearing this three men, who had been standing behind the previously mentioned groups of three and were supporters of Leibnitz, raised their voices and said: 'We have listened to the arguments on either side and compared them, and we have noticed that on many points one party prevails and on many others another. So, if we may, we should like to settle the dispute.'

When they were asked how, they said: 'There is no inflow from the soul into the body nor from the body into the soul, but both activities take place concordantly and instantaneously. This has been elegantly named by a famous writer, who called it pre-established harmony.'

[5] On the conclusion of this debate, the spirit carrying the torch appeared again, but now holding it in his left hand. He shook it towards the backs of their heads, so causing the ideas of all of them to become confused, and they cried out: 'Our soul does not know, neither does our body, which side to take. So let us draw lots to settle the dispute, and we will support the view represented by the first lot drawn.'

So they took three slips of paper and wrote on one 'Physical Inflow', on the second 'Spiritual Inflow' and on the third 'Pre-established Harmony'. They put the three slips into a hat held upside down and selected someone to draw one. He put his hand in and grasped with his hand the one on which was written 'Spiritual Inflow'. When they saw this and read it out, they all said, some however with a clear and fluent voice, some with a dull and withdrawn voice, 'Let us support this, since it came out first.' Then an angel suddenly appeared standing by, who said: 'Do not believe that the paper favouring Spiritual Inflow came out by chance; it was contrived. For your ideas are so confused that you cannot see its truth, but the truth of itself presented itself to his hand, so that you would support it.'

* This section is repeated from ISB 19. ** Christian Wolff (1679-1754), a follower of Leibnitz. *** The Medieval scholars who taught logic.