Hans Christian Von Baeyer

“The law of conservation of energy, reborn as the law of conservation of mass/energy, has established itself as one of the few unshakable theoretical guideposts in the wilderness of the world of our sense experiences. In scope and generality it surpasses Newton's laws of motion, Maxwell's equations for electricity and magnetism, and even Einstein's potent little E=mc². It comes as close to an absolute truth as our uncertain age will permit.”