In tiny, mysterious, curled-up dimensions, is the world of strings. These strings, the tiniest of forms, vibrate in multi-dimensional geometric spaces that are beyond the human senses.

This light was reflected in all the mirrors; but more especially from one great concave mirror in the middle of the front wall, which caught the rays of the light and threw them into the little mirrors, where they sparkled like so many diamonds.

Full of surprise Pancho approached that mirror and saw his own image reflected, although magnified into superhuman dimensions. While his attention was directed intensely toward that mirror, and while he was wondering about this strange phenomenon, his consciousness became suddenly centred in that image, and then it seemed to him as if he himself were that image, looking out of the mirror, and he beheld his figure reflected from all the little mirrors along the walls.

think of the fourth dimension, not as a new region of space – a direction, as has been said, toward which we can never point– but as a principle of growth, of change, a measure of relations which cannot be expressed in terms of length, breadth and thickness