WHAT is Cosmic Consciousness? The present volume is an attempt to answer this question; but notwithstanding it seems well to make a short prefatory statement in as plain language as possible so as to open the door, as it were, for the more elaborate exposition to be attempted in the body of the work. Cosmic Consciousness, then, is a higher form of consciousness than that possessed by the ordinary man. This last is called Self Consciousness and is that faculty upon which rests all of our life (both subjective and objective) which is not common to us and the higher animals, except that small part of it which is derived from the few individuals who have had the higher consciousness above named. To make the matter clear it must be understood that there are three forms or grades of consciousness. (1) Simple Consciousness, which is possessed by say the upper half of the animal kingdom. By means of this faculty a dog or a horse is just as conscious of the things about him as a man is; he is also conscious of his own limbs and body and he knows that these are a part of himself. (2) Over and above this Simple Consciousness, which is possessed by man as by animals, man has another which is called Self Consciousness. By virtue of this faculty man is not only conscious of trees, rocks, waters, his own limbs and body, but he becomes conscious of himself as a distinct entity apart from all the rest of the universe. It is as good as certain that no animal can realize himself in that way. Further, by means of self consciousness, man (who knows as the animal knows) becomes capable of treating his own mental states as objects of consciousness. The animal is, as it were, immersed in his consciousness as a fish in the sea; he cannot, even in imagination, get outside of it. or one moment so as to realize it. But man by virtue of self consciousness can step aside, as it were, from himself and think: “Yes, that thought that I had about that matter is true; I know it is true and I know that I know it is true.” The writer has been asked: “How do you know that animals cannot think in the same manner?” The answer is simple and conclusive—it is: There is no evidence that any animal can so think, but if they could we should soon know it. Between two creatures living together, as dogs or horses and men, and each self conscious, it would be the simplest matter in the world to open up communication. Even as it is, diverse as is our psychology, we do, by watching his acts, enter into the dog’s mind pretty freely—we see what is going on there—we know that the dog sees and hears, smells and tastes—we know that he has intelligence—adapts means to ends—that he reasons. If he was self conscious we must have learned it long ago. We have not learned it and it is as good as certain that no dog, horse, elephant or ape ever was self conscious. Another thing: on man’s self consciousness is built everything in and about us distinctively human. Language is the objective of which self consciousness is the subjective. Self consciousness and language (two in one, for they are two halves of the same thing) are the sine qua non of human social life, of manners, of institutions, of industries of all kinds, of all arts useful and fine. If any animal possessed self consciousness it seems certain that it would upon that master faculty build (as man has done) a superstructure of language; of reasoned out customs, industries, art. But no animal has done this, therefore we infer that no animal has self consciousness.