This classic work "On Pastoral Care" by St. Gregory the Great has been used for over one thousand years by Christian pastors from every tradition. "On Pastoral Care" (also known in Latin as Liber Regulae Pastoralis), is a four-book exposition that offers quintessential guidelines for priests and bishops on how to wisely and biblically lead their churches and how to morally manage their lives. In this writing, Gregory presents his papal opinion on the qualifications, attitudes, choices, and activities of being a good pastor, or, as he terms it, "physicians of the heart." (Book I, Ch. 2.)