This book is an attempt to conceptually unify physics in a clear and testable way that has direct implications for everything that matters to humans. The conceptual unification of physics is accomplished by marrying two of the most promising mathematical frameworks to emerge from physics over the past several decades. The first of these is known as the two-state vector formalism, according to which both the past and the future have a causal impact on the evolution of a quantum system. The second framework is string theory, arguably the most viable candidate for a theory of everything.String theory and the two-state vector formalism are brought together and used to propose an intuitive symmetry that not only conceptually unifies physics but also sets forth an emprirical framework to test some of the biggest open questions in philosophy and social science.This fully-referenced book is written with eminent clarity using precise math that is borne out by experiment and by the well-established canon of mainstream physics. Written for experts in a style that is mindful of a general audience, this book is recommended for anybody who is eager to make intuitive sense of the confusion that reigns at the cutting edge of theoretical physics and across the human intellectual landscape.