The discussion centers around the dissatisfaction with Stewart's calculus textbook and the search for more rigorous alternatives suitable for a major in mathematical physics. Participants express that while Stewart's book provides a basic understanding of calculus, it lacks the depth and rigor desired by those pursuing higher mathematics. It is acknowledged that having a foundation in computational calculus is beneficial, and transitioning to more rigorous texts is encouraged. Recommendations include Nitecki's "Calculus Deconstructed," Apostol's "Mathematical Analysis," and Taylor's "Advanced Calculus," with the consensus that these books can effectively build on existing knowledge. Concerns about the accessibility and style of these texts are noted, but the emphasis remains on the importance of developing a rigorous understanding of calculus and analysis. Overall, the conversation highlights the value of diverse mathematical resources and the necessity of progressing from computational to rigorous approaches in mathematics education.