The only answer to this argument is that it is not 'on the other side.' There is no doubt about the deliverance of consciousness; and even if our powers of self-observation had not been acute enough to discover it, the existence of some choice between motives would be proved by the existence of vaso-motor nerves. But perhaps the most instructive way of meeting arguments of this kind is to inquire what consciousness ought to say in order that its deliverances may be of any use in the controversy. It is affirmed, on the side of uniformity, that the feelings in my consciousness in the moment of voluntary choice have been preceded by facts out of my consciousness which are related to them in a uniform manner, so that if the previous facts had been accurately known the voluntary choice might have been predicted. On the other side this is denied. To be of any use in the controversy, then, the immediate deliverance of my consciousness must be competent to assure me of the non-existence of something which by hypothesis is not in my consciousness. Given an absolutely dark room, can my sense of sight assure me that there is no one but myself in it? Can my sense of hearing assure me that nothing inaudible is going on? As little can the immediate deliverance of my consciousness assure me that the uniformity of nature does not apply to human actions. It is perhaps necessary, in connection with this question, to refer to that singular Materialism of high authority and recent date which makes consciousness a physical agent, 'correlates' it with Light and Nerve-force, and so reduces it to an objective phenomenon. This doctrine is founded on a common and very useful mode of speech, in which we say, for example, that a good fire is a source of pleasure on a cold day, and that a man's feeling of chill may make him run to it. But so also we say that the sun rises and sets every morning and night, although the man in the moon sees clearly that this is due to the rotation of the earth. One cannot be pedantic all day. But if we choose for once to be pedantic, the matter is after all very simple. Suppose that I am made to run by feeling a chill. When I begin to move my leg, I may observe if I like a double series of facts. I have the feeling of effort, the sensation of motion in my leg; I feel the pressure of my foot on the ground. Along with this I may see with my eyes, or feel with my hands, the motion of my leg as a material object. The first series of facts belongs to me alone; the second may be equally observed by anybody else. The mental series began first; I willed to move my leg before I saw it move. But when I know more about the matter, I can trace the material series further back, and find nerve-messages going to the muscles of my leg to make it move. But I had a feeling of chill before I chose to move my leg. Accordingly, I can find nerve-messages, excited by the contraction due to the low temperature, going to my brain from the chilled skin.