Saint Aloysius Gonzaga (1568-1591) was a prince of the Holy Roman Empire who renounced his titles and wealth to serve God and the Church as a member of the Society of Jesus. While he lived a short life and is honored as the patron saint of youth, Saint Aloysius invites all Christians to reflect on how they are living their unique vocations to be witnesses to Christ. Using the saint's own letters and spiritual reflections, and other historical documents, this book offers unparalleled insights into his life and personality. Woven together with his biography are also portraits of other Jesuits and Reformation saints. The author explains the history of the Society of Jesus and shows how Aloysius Gonzaga played an important part in developing the Jesuit's educational apostolate. For those interested in Jesuit history, the Reformation, or simply this appealing saint, this book offers a unique perspective on an important period of Church history and what it means to pursue God's will without counting the cost.