This book traces the history of physics from the observations of the early Greeks, through the discoveries of Galileo and Newton, to the dazzling theories of such scientists as Planck, Einstein, Bohr, and Bohm. This blend of history, conceptual understanding, and speculation carries the reader from a solid, nontechnical grasp of contemporary physics to mindstretching visions of how quantum mechanics, God, human thought, and will are related.