Madsen Pirie, PhD is a British researcher, author, and educator. He is the founder and current President of the Adam Smith Institute, a UK think tank which has been in operation since 1978. Apart from his work with the Institute, Pirie is an author in several fields, including philosophy with How to Win Every Argument (accompanied by a YouTube video series of the same name) and 101 Great Philosophers. He has written on economics, including Economics Made Simple, and a series of YouTube videos entitled Economics is Fun. He has co-authored (with Eamonn Butler) Test Your IQ and Boost Your IQ. In 2010 he was joint winner (with Eamonn Butler) of the National Free Enterprise Award.