What is the universe made of? Why do particles have mass? And what lies beyond the limits of what we can see? In The Particle of God: Unveiling the Secrets of the Universe, Nazzareno Luigi Todarello takes readers on an illuminating journey through modern physics-from ancient atomism to the Higgs boson and the heart of quantum reality. With clarity and passion, this book explores the hidden structure of matter, the forces that govern it, and the deep connections between the infinitely small and the infinitely vast. A compelling read for science lovers, curious minds, and anyone who has ever looked up at the stars and asked, Why?