It was always going to hard to resist a book with "physical insights" in the title. I have only gotten a few chapters in, but already this has shown itself a unique treatment. Finally, an unapologetic, methodical explanation of advanced mathematical concepts and notations needed for advanced physics. The frequent example breakouts include both math-oriented elaborations of the material just presented as well as applications from physics. Good graphs and drawings, as you would expect. Overall, a refined, high quality production.