Abstract
Ever since Plato, philosophers have recognized the relationship of truth and the good to be of central importance. Nevertheless, what that relationship is has been a source of ongoing controversy. At one extreme, truth has been identified with the good, whereas at the other, truth and the good have been kept apart as irreconcilably separate. How the relationship between truth and the good is construed has decisive ramifications for what each is conceived to be and for how theory and practice are related. Three figures play a seminal role in exploring the relation of truth and the good: Plato, Kant, and Hegel. Through considering their respective investigations, we will find that so long as truth and the good are held apart, not only will theory and practice be devoid of any unity, but theory will be just as unable to attain truth as practice will be unable to realize the good.