Some have called it the essence of sin, others the depth of salvation. Regardless of one's evaluation of it, however, deification throughout Western history has been a part of human aspiration. From the ancient pharaohs to modern transhumanists, people have envisioned their own divinity. These visionaries include not only history's greatest megalomaniacs, but also mystics, sages, apostles, prophets, magicians, bishops, philosophers, atheists, and...