sense-phenomena

In general all the processes of the soul occur in a manner very different from that conceived by unobservant men. Psychic phenomena occur very differently from sense-phenomena, the analogy of which may lead to very serious errors. Hence the above unobservant men imagine that sensations and memories resemble characters inscribed on tablets or sheets of paper. Whether they consider the soul material (as do the Stoics), or as immaterial (as do the Peripatetics), they certainly do not realize the absurd consequences which would result from the above hypothesis. [Ennead IV,6 (41) 3]