TWO:Again, to suppose that the soul shares in the changes of the body is incompatible with the self-identity which memory reveals. To suppose that it is an extended substance is incompatible with its simultaneous presence, as an indivisible whole, at every point to which its activity reaches; as well as with the circumstance that all our sensations, though received through different organs, are referred to a common centre of consciousness. If the sensorium is a fluid body it will have no more power of retaining impressions than water;295 while, if it is a solid, new impressions will either not be received at all, or only when the old impressions are effaced.
