 Regarding his treatment of emotions, Theophrastus agreed with Aristotle that emotions are complex phenomena involving bodily changes, which manifest themselves as painful or pleasant sensations, thought or belief, desire, and in many cases goal-directed behaviour. To take, for instance, the case of anger that features predominantly in our sources, it is said to involve the thought that insult has occurred, which causes the boiling of blood and warmth around the heart, but it also involves changes in countenance and voice, as well as the desire for revenge (frs. 271, 441, 446–447, 526, 542 FHS&amp;G). On the other hand, Theophrastus seems to have diverged from Aristotle, when he discussed closely related emotions in terms of the more and the less. Using again the example of anger, Theophrastus postulated that while anger is characterized by bodily changes and painful sensations, the thought that some injustice has occurred, and the wish for retribution, rage involves these same features to a greater degree and faultfinding to a lesser degree (fr. 438 FHS&amp;G). However, due to the meagre evidence available, it is not clear whether Theophrastus thought of difference in degree as merely compatible with difference in kind, or actually determinant of difference in kind (see Fortenbaugh 1985a).