Leonard Peikoff is the preeminent Ayn Rand scholar writing today. He worked closely with Rand in New York City for thirty years and was designated by her as heir to her estate. He has taught philosophy at several places, including Hunter College and New York University. Dr. Peikoff is the author of The DIM Hypothesis: Why the Lights of the West Are Going Out and The Cause of Hitler's Germany. He grew up in Western Canada and now lives in Southern California. He also hosted the national radio talk show "Philosophy: Who Needs It."