In a book called Symbolism, Its Meaning and Effect, Whitehead points out that perception is usually a matter of symbols, just like language; I say I … - Colin Wilson

And the central assertion of his philosophy is that this inner realm is the 'spiritual world' and that once man has learned to enter this realm, he realizes that it is not a mere imaginative reflection of the external world, but a world that possesses its own independent reality.

There certainly is self division. The man who watches a woman undressing has the red eyes of an ape; yet the man who sees two young lovers, really alone for the first time, who brings out all the pathos, the tenderness and uncertainty when he tells about it, is no brute; he is very much human. And the ape and the man exist in one body; and when the ape's desires are about to be fulfilled, he disappears and is succeeded by the man, who is disgusted with the ape's appetite.

That passivity was the essence of the problem. The human being was intended to be passive only in a condition of fatigue, and not always then. Too much passivity of body produced surplus fat, short-windedness, indigestion: passivity of mind produced the same symptoms on the mental level. a feeling of spiritual dyspepsia. Since the average human being has no purposes that are not connected with the activities of keeping alive, the black room was bound to produce passivity, increasing dullness, a state in which the mind is at once awake and static, motionless, stagnant. This sense of dullness was nothing less than the collapse of the sense of reality and of values, the retreat into one's inner world.