The interplay between non-relativistic quantum theory and metaphysics has generated radically opposed interpretations for quantum theory: Niels Bohr's "orthodox" interpretation, and Einstein's "realist" approach. This debate in turn fostered the classical first-generation paradoxes of quantum theory: Schrödinger's Cat and the Einstein-Podolsky-Rosen paradoxes. More recently, a range of new paradoxes has emerged from the work of J.S. Bell. This book outlines the contours of these debates and presents an interpretation of quantum theory which, while metaphysically realist, resolves most of the paradoxes.