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environments, yet it is always the same individual who perceives them. We may present many aspects or selves to different individuals, yet the same being resides behind these personalities, or masks. A man may deceive others, but he cannot be other than himself. He may be "beside himself," as the saying is, or "out of his head" in a fever. But he comes to himself again. Consciousness subsides in sleep, but that is no argument to show that it is gone, or that it is a product of the body. Man becomes insane, but it is in pursuit of an idea. Insanity does not prove a man less but more mental. And although the body ceases to be an animated whole at death, many of us expect to live in a finer world where a material body will not be needed.

There are many lines of thought, then, which lead from the physical world to the mental. They are lines of thought,--note that. One cannot even raise the question concerning the existence of matter without turning from the body to the mind. The grossest materialist must use mental facts to argue for materialism. But, you say, he may contend that thought is a function of the brain. So it would seem. This is a common supposition, based on the presupposition that we know more about matter than about mind. This assumption lies at the basis of our habit of regarding ourselves as physical beings. The truth