Hans Urs von Balthasar is widely recognized as perhaps the greatest Catholic theologian of the twentieth century. No writer has better revealed the spiritual greatness of the revelation to which the art of the Church and the historic liturgies bear witness. Yet students and non-specialist readers often find Balthasar daunting and difficult. A Key to Balthasar is the ideal introduction to his work. It unlocks the treasure of his theology by focusing on the beautiful, the good, and the true. These are the three qualities of being around which his great trilogy - The Glory of the Lord; Theo-drama and Theo-logic - revolves. Though brief, it captures the essence of what Balthasar wished to say.