How can we tell good from evil? Is there a way that we should lead our lives? Such inquiries are typically the realm of philosophers, but Steven Landsburg argues that math, economics, and physics can explain life's big questions. With logic and humor, he uses mathematical analysis to examine arguments for the existence of God, and employs economic methods to determine social responsibility. Steven Landsburg joins Larry Mantle to discuss "The Big Questions."

Guest:

Steven Landsburg, author of "The Big Questions: Tackling the Problems of Philosophy with Ideas from Mathematics, Economics, and Physics (Free Press). He is a Professor of Economics at the University of Rochester, and writes the "Everyday Economics" column for Slate.