(…) no spectator is needed, because your consciousness basically is yo — Max Tegmark

"(…) the bottom line is that if you believe in an external reality independent of humans, then you must also believe that our physical reality is a mathematical structure. Nothing else has a baggage-free description. In other words, we all live in a gigantic mathematical object—one that’s more elaborate than a dodecahedron, and probably also more complex than objects with intimidating names such as Calabi-Yau manifolds, tensor bundles and Hilbert spaces, which appear in today’s most advanced physics theories. Everything in our world is purely mathematical—including you."

"So this book... [is] my personal quest for the ultimate nature of reality."

"Eratosthenes... knew that the Sun was straight overhead in... Syene at noon on the summer solstice, but that it was 7.2 degrees south of straight overhead in , located 794 kilometers farther north. He concluded... 794 kilometers corresponded to 7.2 degrees out of the 360 degrees... around Earths circumference, so that the circumference must be... 39,700 km..."

"Theres no better guarantee of failure than convincing yourself that success is impossible..."

"We have to get away from this idea today with some fact-checking sites which might themselves have an agenda and you just trust it because of its reputation. You want to have these sort of systems [where] they earn your trust and that is completely transparent."

"My guess is that we’ll one day understand consciousness as yet another phase of matter. I’d expect there to be many types of consciousness just as there are many types of liquids, but in both cases, they share certain characteristic traits that we can aim to understand."