The book gives a beautiful tour of "fundamental physics"; it is certainly not about all of Physics. It is an attempt to review the basic aspects of our current picture of the fundamental elements and laws of the reality, from which some understanding of the very small and the very large of the universe can be gained.<br>Who is this book NOT for: someone without some college level math background, OR someone without enough patience to spend months to slowly progress in learning the book's invaluable content.<br>Who is this book GREAT for: anyone with a college level math background. Students of science or engineering, in particular.<br>Who is this book PERFECT for: an udergrad student of Math or Physics, with some interest in theoretical physics. Graduate students or PhDs of those fields, will still certainly find the book indispensable, but will most probably wish they had read it earlier.<br>The first half of the book is a wonderful coverage of a nice selection of math topics, important for theoretical physics, and that with a good number of exercises, which combines with a clear and exciting narration to make it pedagogically fantastic! It indeed revived my deep interest in math after a long time. Among the topics in the first half are: algebra (groups and representations in particular), geometry (manifolds, differential forms, fiber bundles and connections in particular) and complex analysis (Cauchy's theorem, Riemann surfaces and Fourier decompositions in particular). A chapter on infinities, Turing machines and the Godel's theorem, beautifully ends the math lectures before starting the physics.<br>The physical discussions (starting with "Spacetime") are both pedagogical and bold: pedagogical because so much insight is conveyed through a very readable text. Bold, because the author dares expressing his sometimes unconventional views on the controversial topics.<br>In the second part, among the topics presented are: Quantum Mechanics, Quantum Field Theory, the Standard Model, early universe Cosmology, the Measurement problem, Superstrings and Loop Quantum Gravity; all these fascinating things and more you will learn from a brilliant thinker and expositor! What could be better?<br>In sum, for people interested in fundamental physics (or as the branches are often called, Mathematical Physics, High Energy Theoretical Physics, Particle Physics, Quantum Physics, and Cosmology), with a college level background in math (including Calculus), THERE IS NO ALTERNATIVE SINGLE BOOK FOR THIS HUMONGOUS AMOUNT OF KNOWLEDGE AND INSIGHT TO BE GAINED FROM!