“Space was still there; but it had lost its predominance. The mind was primarily concerned, not with measures and locations, but with being and meaning.
(…) the man who comes back through the Door in the Wall will never be quite the same as the man who went out. He will be wiser but less cocksure, happier but less self-satisfied, humbler in acknowledging his ignorance yet better equipped to understand the relationship of words to things, of systematic reasoning to the unfathomable Mystery which it tries, forever vainly, to comprehend. (…)
It does not consist in the fact that ‘these wonderful originals seen in my visions, were some of them one hundred feet in height … all containing mythological and recondite meaning.’ It consists solely in his ability to render, in words or (somewhat less successfully) in line and color, some hint at least of a not excessively uncommon experience. The untalented visionary may perceive an inner reality no less tremendous, beautiful and significant than the world beheld by Blake; but he lacks altogether the ability to express, in literary or plastic symbols, what he has seen.”