Bowlin, John. Contingency and Fortune in Aquinas's Ethics (Cambridge Studies in Religion and Critical Thought). Cambridge: Cambridge University Press, 1999. ISBN: 9780521620192. 
Very good black cloth hardcover, the text is clean and unmarked. Good dust jacket with slight shelf-wear, now in a clear wrapper. Very good in good dust-jacket. Hardcover.
"Bowlin argues that the strength of Aquinas' moral theology is his assumption about our common lot: the good we desire is difficult to know and to will, particularly because of contingencies of various kinds--within ourselves, in the ends and objects we pursue, and in the circumstances of choice. Since contingencies are fortune's effects, Aquinas insists that fortune makes good choice difficult. Bowlin explores Aquinas' treatment of virtue, agency, and happiness in this context, and places him more precisely in the history of ethics, among Aristotle, Augustine, and the Stoics." - publisher.