A symbol, like everything else, shows a double aspect. We must distinguish, therefore between the 'sense' and the 'meaning' of the symbol. It seems to me perfectly clear that all the great and little symbolical systems of the past functioned simultaneously on three levels: the corporeal of waking consciousness, the spiritual of dream, and the ineffable of the absolutely unknowable. The term 'meaning' can refer only to the first two but these, today, are in the charge of science – which is the province as we have said, not of symbols but of signs. The ineffable, the absolutely unknowable, can be only sensed. It is the province of art which is not 'expression' merely, or even primarily, but a quest for, and formulation of, experience evoking, energy-waking images: yielding what Sir Herbert Read has aptly termed a 'sensuous apprehension of being.'