How did the universe come into being? What banged in the so-called "Big Bang?" Are the methods of science adequate for a complete understanding of reality? How are the seemingly different entities like space, time, matter and energy related to each other? Is there a common thread that runs through them? How can the elusive entity of consciousness be explained? If you have been curious about these questions, this book will be of interest to you. It covers a wide range of such questions and makes an attempt to answer them through the disciplines as diverse as physics and mathematics, logic and philosophy, quantum theory and consciousness, and so on. With a child-like curiosity, the author leads you to the questions about the origin of the universe and traces it to nothingness or zero. It is the reinterpretation of zero or nothingness that is the central theme of this book in its quest of understanding the reality. It is a chronicle of the evolution of the author's thoughts from "split of zero" to "inﬁnite instability of zero" that is the secret behind the origin and existence of the universe.