This document summarizes a presentation given by Asif Khan, CFA on finance theory versus practice. It discusses how theory and practice are both important in finance. Theory teaches fundamental concepts in classrooms, while practice involves working in the corporate world in roles across both financial and non-financial sectors. Later, it describes how people may return from practice to revisit theoretical concepts. It then outlines some key topics in finance theory that are relevant for various roles, such as financial statement analysis, corporate finance, investment analysis, risk management, and bank management.