To move up in the world, Galileo and other members of his generation sought positions at court. To help them know what to expect, Castiglione wrote the standard manual for court etiquette, how to please your supervisor. Coach Galileo would say, pay attention to Castiglione. OU Libraries also holds an earlier edition of this work: Baldassarre Castiglione, Del cortegiano (Venice, 1528).