St. Bonaventure (AD 1221-1274) St. Bonaventure was a Franciscan friar, philosopher, theologian, cardinal and is also a doctor of the Church. In the Augustinian tradition, Bonaventure thought of Christ as the “one true master” who offers us knowledge that begins with faith, is developed through reason, and is perfected by mystical union with God. St. Bonaventure is of particular interest to our seminarians in the Capuchin Formation Program.