2. The same holds true of the unity of consciousness, of which we are directly convinced. It is quite inexplicable [pg 315] if consciousness is a function of the extended and divisible physical substratum which is built up of nerve-cells and nerve-fibres. And yet this unity is the fundamental condition of our whole inner life.

Even the facts of association demonstrate it. Two images could not come together, the one could not call up the other, if they were not possessed in the same consciousness, and could unite in it. It is the preliminary condition of every higher mode of thought, of every relating of things, of every comparison and abstraction. No judgment can be formed, no conclusion drawn without this. How could a predicate become associated with its subject, or a principal clause with its subordinate clause, if they were in separate consciousnesses, and how could the conclusion be drawn from them?