This document discusses four principles of corporate finance that CEOs can use to make good financial decisions even without the CFO present. The four principles are: 1) the core-of-value principle which establishes that value is created through returns on capital and growth, 2) the conservation-of-value principle which states that only improving cash flows creates value, 3) the expectations treadmill principle which explains how stock prices reflect changes in expectations rather than just performance, and 4) the best-owner principle which says that a business's value depends on its owner and strategy. The document provides examples of how CEOs can apply these principles to decisions around mergers and acquisitions, divestitures, project analysis, and executive compensation.