Abstract

This paper investigates Thomas Aquinas’s threefold division of pleasure into delectatio, gaudium, and fruitio, and its taxonomical basis in his threefold division of knowledge into tactility, the cogitative power, and the intellect. Thomas Aquinas distinguishes three ways in which the sensory and intellectual appetites rest in the good. When the will rests in the intellectually apprehended good, this act is called fruitio; when the concupiscible appetite rests in a good apprehended by the internal senses this passion is called gaudium; and when the concupiscible appetite rests in a good apprehended by the external senses this passion is called delectatio. Each of these appetible goods presupposes a different kind of knowledge of a present good, namely, the knowledge of the intellect, internal senses, and external senses, respectively. The difficulty is that it is not entirely perspicuous what the difference is between the goods apprehended by the external senses and those grasped by the internal senses. How does Thomas justify the distinction between delectatio and gaudium? Can he reasonably maintain that there are three sufficiently different kinds of knowledge that specify three different kinds of pleasure? In order to address these questions this study investigates Thomas’s account of the external and internal senses, and in particular the way in which tactility and the cogitative power supply two kinds of knowledge that specify two kinds of pleasure.