en, that which does not exist, and what we wish for. Thus, while reading a book, we can perfectly imagine what the author is describing; images of non-existent worlds are created in our minds. Or while walking or taking a shower, our thoughts wander without limits, and you might find yourself on a beautiful beach at sunset with the gentle wind blowing and tickling your skin; or in a big city with cars waiting furiously at traffic lights, honking and roaring; or perhaps in a large market full of the scents and colors of spices, with people shouting in thick dialects. We lose ourselves admiring our imaginations, our abstractions, and then maybe we feel a bit of relief, or at least, I do. This book starts from containers, just as our minds are containers of ideas and thoughts. These mix, multiply, expand, abstract, and become something else. The containers become imagination, space, time, matter, mathematics, geometry, nature in the void of infinite imagination.