Defining Virtue

St. Augustine's definition of virtue can scarcely be improved upon: "rightly ordered love" (Book XV, City of God).

Here is C. S. Lewis's expansion of Augustine's definition: "St. Augustine defines virtue as ordo amoris, the ordinate condition of the affections in which every object is accorded that kind of degree of love which is appropriate to it" (Ch. 1, The Abolition of Man).