These two volumes inspired Mandelbrot’s fractal explanation of nature and underpins a many worlds theory or multiverse. Size is relative:

“We can never arrive at anything ultimate by making our unit small. There will always be something a million times smaller, infinitely smaller. Why not, then, take the bull by the horns and recognise that dimensions are only relative, that our faculties have a limited range, and that, however far we extend that range on a larger or smaller scale, the same problems are presented to us? Let us not bury these problems out of sight in the Infinitesimal. No material interpretation of the universe will ever explain anything. The elementary particle, the elementary position or motion, will be the greatest of all puzzles. Real progress must be sought for in quite another direction.”