Hello. While I am not heading off to graduate school for a little bit, I am interested in persuing a phd in pure mathematics (Geometry is a broad interest of mine). I would also be interested in taking one or two mathematically inclined graduate courses from the Physics department (String Theory, Quantum Field Theory or such) due to both an interest in theoretical physics and a feeling that it may help me understand the applications of Geometry to physics. I am aware it will depend on the school, but is this a possibility, will I still be able to take graduate courses in Pure Mathematics as well as one or two courses from the Physics department? Is this unusual? Also out of curiosity, do people learn much from Graduate courses, or did you find them more of a chore, something to be finished as quickly as possible? Does there come a point where teaching yourself is more effective than attending courses or seminars?