Sandro del Prete
Klein's Bottle Trap
Our little devil, dependent on the material laws of the physical world, falls in love with a beautiful angel in a bottle. He dreams of joining her there, so seeing his chance, he slithers under the base and into the bottle. Once there, the fallen creature realizes that there is still a wall of glass between him and his angel. Since the luminous being has no wish whatsoever to meet with the devil, she takes a step back and exists the bottle. For a heavenly dweller, glass is not obstacle. The devil, hovewer, now finds himself trapped in the bottle.
The German mathematician Felix Klein (1849 - 1925) invented a bottle that has only an outside but no inside.