In the intellectual whirlwind of Enlightenment Scotland, a profound friendship blossomed between two of history's most influential thinkers: David Hume, the so-called "Great Infidel" known for his skeptical religious views, and Adam Smith, the revered moral philosopher and putative father of capitalism. "The Infidel and the Professor" by Dennis C. Rasmussen masterfully narrates the story of this remarkable relationship, exploring how their enduring bond not only shaped their individual legacies but also left an indelible mark on modern thought. Through a detailed account of their interactions, correspondence, and mutual influence from their first meeting in 1749 until Hume's death in 1776, Rasmussen brings to life the intellectual synergy of two minds whose ideas would come to define an era. Rasmussen delves deep into the heart of Hume and Smith's philosophical kinship, shedding light on their personal discussions, shared ambitions, and the broader intellectual milieu of their time. From their thoughts on morality and economics to their private views on religion and politics, this narrative reveals the depth and complexity of their ideas, as well as the challenges they faced from societal conventions and contemporary critics. Beyond their towering contributions to philosophy and economics, "The Infidel and the Professor" uncovers the lesser-known aspects of their work, showcasing Hume's unexpected influence on economic theory and Smith's philosophical insights. In this captivating account, Rasmussen not only celebrates the greatest of all philosophical friendships but also illustrates its significant impact on the foundations of modern thought, making it an essential read for anyone interested in the Enlightenment and the intellectual forces that shaped our world.