Tolerance grows only when faith loses certainty; certainty is murderous. Author: Will Durant Copy Quote More from Will Durant “Read, think well of mankind, go to our libraries and rejoice.” “We are what we repeatedly do. Excellence, therefore, is not an act, but a habit.” “In progressive societies the concentration[of wealth] may reach a point where t…” “Forget mistakes. Forget failure. Forget everything except what you're going to …”