I'm looking for a good book on the transcendentals.  I have a little anthology called An Introduction to the Metaphysics of St. Thomas Aquinas that has some good stuff on the transcendentals.  Any other recommendations?  It does not have to be a Thomist work, as really I am looking for anything that deals with philosophy as the pursuit of Truth, Beauty, Goodness and Unity, but it seems Thomists often deal with these ideas explicitly, whereas one can find them in Plato, but often more implicitly.  Any recommendations are much appreciated.