Cosimo de' Medici - Cosimo Pater Patriae, Father of the Country -was one of the wealthiest, most powerful and most intelligent men in Europe, and had a cantankerous, stick-in-the-mud sculptor as a best friend. This episode explores what made the Medici the Medici, and how a collaboration between secular power and the Renaissance Avant-Garde led to Donatello's striking and controversial David.