ABSTRACT
Human memory, like that of Aplysia, is stored in the modification of the connectedness between nerve cells. The memory, that is to say, is supposed to be a present state of a part of nervous system, a present physical state of a physical entity, namely brain. Smile at Waterloo Station is located in the past, so that the memory is aware that it reaches across time. In the physical world, no event is intrinsically past, present or future. It becomes so only with reference to a conscious, indeed self-conscious, being who provides the reference point, the 'now', that makes some events past, others future and yet others present. The temporal depth created by memories, which hold open the distance between that which is here and now, and that which is no longer, is a product of consciousness, and is not to be found in the material world.
