The discussion centers on finding texts that cover classical mechanics, electrodynamics, and general relativity with a focus on tensors and geometry. Recommended resources include "Mathematical Methods of Classical Mechanics" by V. I. Arnold and "Foundations of Mechanics" by Marsden, which is available for free. Additionally, "Introduction to Mechanics and Symmetry" by Marsden and Ratiu is mentioned, along with "The Formal Structure of Electromagnetics" by Post for electromagnetics. The conversation highlights a preference for texts that utilize a geometric approach, particularly in the context of mechanics. Overall, there is a clear interest in resources that emphasize differential geometry in the study of these physical theories.