Oliver Keenan brings the medieval philosophy of Thomas Aquinas to life. Thomas Aquinas is more than a medieval curiosity. He was a reluctant revolutionary, a scholar, poet and saint whose work unleashed an epoch-defining explosion of philosophical creativity in the thirteenth century. Writing at a time of war, injustice, poverty and alienation, Aquinas’ thought reaches across the ages and speaks to us today. As Oliver Keenan argues, Aquinas matters now not because he was right about everything but because he can teach us a new way of looking at the world. A powerful voice for community, justice, friendship and peace, Aquinas’ profoundly non-violent philosophy shows us how to be human in a deeply dehumanizing world.