The physics behind mathematics: Conservation of the Circle is the conservation constant. This book answers the outstanding questions in theoretical physics and cosmology (including quantum gravity), illuminating and clarifying the underlying intelligence in nature. This is a technical explanation of exactly how the Circle integrates mathematics and physics, and, eventually, all disciplines. It exposes the circle-line relationship as the most basic dynamic in science, details exactly how it operates, how it articulates itself, and how we can use it to prove an underlying unity in nature. Advanced reading for physicists, mathematicians, and laypersons interested in foundational (circular) (classical and quantum) mechanics. An absolute cycle is identified as the constant in nature, and, especially, mathematics. Conservation Trilogy: Book Two.