The old paradigm of linear quantum mechanics is worn out. It is therefore urgent to replace it with a new approach, one which accepts a reality independent from the observer and which solves the paradoxes and enigmas that popular theories continue to stimulate.This book, in a language accessible not only to scholars but to everyone, exposes the insufficiencies of the orthodox and dominant linear quantum physics, and also demonstrates that time has come to bet on a new quantum physics, a causal and nonlinear physics, which for the time being is heterodox.