S/PS/89. 'You, your joys and your sorrows, your memories and your ambitions, your sense of personal identity and free will, are, in fact no more than the behaviour of a vast assembly if nerve cells and their associated molecules. As Lewis Carroll's Alice might have phrased it: "You are nothing more than a pack on neurons" (Francis Crick 1994. The Astonishing Hypothesis: The Scientific Search for the Soul)

The paper reviews scientific approaches to brain functioning arguing the existence of a soul as part of the control mechanism over human behaviour, along with the neurons.