 William of Conches (d. c. 1154) argued that there were two primary types of emotions, love and hate, which were divided according to whether an object is liked (placet) or disliked (displicet). Other emotions derived from these: love included joy and desire, and hate included distress, fear, and anger (Glosae super Platonem 69, 122). This terminology was later employed in Radulfus Ardens’s Speculum universale (c. 1200), an extensive work on virtues and vices, and then in the basic division of concupiscible emotions in John of la Rochelle’s influential Summa de anima (1235). Isaac of Stella (d. 1177), a Cistercian theologian, presented an Augustinian classification which combined the Stoic fourfold table with Platonist concepts as follows