I found myself having a hard time choosing what mathematical physics text should I stick with. I'd like to think of myself as mathematically inclined, and I would really prefer a mathematical physics book that emphasizes 'the maths' and the proofs and not just the methods while maintaining its significance to physics. I'm thinking of sticking with this one: https://www.amazon.com/Methods-Mathematical-Physics-Cambridge-Library/dp/0521664020 I have heard that this is a fairly good book about mathematical physics that seems to discuss the maths in a good depth. I am worried though, that I may be learning outdated stuff since the book is also fairly old. This, or should I stick with the standard(?) Arfken and Weber book?