III. What is Mysticism?
Is the soul left empty, then, when it exerts itself to forget everything reflected within it from the outer world, to obliterate all impressions and conceptual images drawn from that world? The true mystical experience depends on the fact that the soul has other possibilities, so that when it banishes not only its memories but its feelings of sympathy and antipathy, it still has some content. The mystic feels that impressions of the outer world, with their brightly coloured pictures and their effects on the soul, have the result of suppressing something which exists in the soul's hidden depths. The mystic feels that when he is open to the external world, its life is like a powerful light which outshines and blots out the finer experiences of the soul. But when all impressions from the outer world are erased, the inner spark, as Eckhart calls it, shines forth. He then experiences in the soul something which had previously seemed not to be there, for it was imperceptible in face of the dazzle of the outer world.