C S Lewis wrote in Perelandra:
now, by a transition which he did not notice, it seemed that what had begun as speech was turned into sight, or into something that can be remembered only as if it were seeing. He thought he saw the Great Dance. It seemed to be woven out of the intertwining undulation of many cords or bands of light, leaping over and under one another and mutually embraced in arabesques and flower-like subtleties. Each figure as he looked at it became the master-figure or focus of the whole spectacle, by means of which his eye disentangled all else and brought it into unity – only to be itself entangled when he looked to what he had taken for mere marginal decorations and found that there also the same hegemony was claimed, and the claim made good, yet the former pattern not thereby dispossessed but finding in its new subordination a significance greater than that which it had abdicated. He could see also (but the word 'seeing' is now plainly inadequate) wherever the ribbons or serpents of light intersected, minute corpuscles of momentary brightness: and he knew somehow that these particles were the secular generalities of which history tells – peoples, institutions, climates of opinion, civilisations, arts, sciences, and the like – ephemeral coruscations that piped their short song and vanished. The ribbons or cords themselves, in which millions of corpuscles lived and died, were things of some different kind. At first he could not say what. But he knew in the end that most of them were individual entities. If so, the time in which the Great Dance proceeds is very unlike time as we know it. Some of the thinner and more delicate cords were beings that we call shortlived: flowers and insects, a fruit or a storm of rain, and once (he thought) a wave of the sea. Others were such things as we also think lasting: crystals, rivers, mountains, or even stars. Far above these in girth and luminosity and flashing with colours from beyond our spectrum were the lines of the personal beings, and yet as different from one another in splendour as all of them from all the previous class. But not all the cords were individuals; some were universal truths or universal qualities. It did not surprise him then to find that these and the persons were both cords and both stood together against the mere atoms of generality which lived and died in the clashing of their streams: but afterwards, when he came back to earth, he wondered.
Would be a good description of an LSD trip. It always seemed to me that the seething patterns were fractals revealed by but not invented by drugs.