At its great illuminated moments the complex vision reduces the limitlessness of space to a realizable sensation of liberty, and the "flowingness" of time to an eternal now; but even at these moments it is conscious of an unfathomable background, one aspect of which is the immensity of space and the other the flowingness of time. The revelation of the complex vision which I have thus attempted to indicate will be found identical with the natural conclusions of man in all the ages of his history. The primeval savage, the ancient Greek, the mediaeval saint, the eighteenth century philosopher, the modern psychologist, are all brought together here and are all compelled to confess the same situation. That we are now living personalities, possessed of soul and body, and surrounded by an unfathomable universe, is a revelation about which all ages and all generations agree, whenever the complex vision is allowed its orchestral harmony. The primeval savage looking up at the sky above him might regard the sun and moon as living gods exercising their influence upon a fixed unmoving earth. In this view of the sun and the moon and the stars such a savage was perfectly within his right, because always along with it even to the most anthropomorphic, there came the vague sense of unfathomableness. The natural Necessity of the ancient Greeks, the trinitarian God of the mediaeval school-man, the great First Cause of the eighteenth-century deist, the primordial Life-Force of the modern man of science, are all on common ground here in regard to the unfathomableness of the ultimate mystery. But the revelation of the complex vision saves us from the logical boredom of the word "infinite." The idea of the infinite is merely a tedious mathematical formula, marking the psychological point where the mind finds its stopping-place. All that the complex vision can say about "infinite space" is that it is a real experience, and that we can neither imagine space with an end nor without an end. The "Infinite" is the name which logic gives to this psychological phenomenon. The fact that the mind stops abruptly and breaks into irreconcilable contradictions when it is confronted with unfathomable space is simply a proof that space without an end is as unimaginable as space with an end. It is no proof that space is merely a subjective category of the human mind. One, thing, however, it is a proof of. It is a proof that the universe can never be satisfactorily explained on any materialistic hypothesis. The fact that we all of us, at every hour of our common day, are surrounded by this unthinkable thing, space without end, is an eternal reminder that the forms, shapes and events of habitual occurrence, which we are inclined to take so easily for granted, are part of a staggering and inscrutable enigma.