In a world where philosophy is often reduced to catch-phrases and empty theories, this is a passionate defence of logic and consistency as the keys to happiness. In the areas of career, health, relationships, and investments, this essay shows how to let go of wasteful propositions, pursue compatible goals, cultivate perseverance and resilience, and maximize opportunities. Inspired by the teachings of Aristotle, Maimonides, Erasmus, Montaigne and Spinoza,...