According to Plutarch, knowledge of intelligibles through anamnêsis is not in tension with the Academic prescription for suspension of judgment; rather, knowledge can be advanced by suspension of judgment, since the latter puts aside opinion (doxa) as well as egoism (philautia), both of which prevent us from finding the truth (Plat. Quest. 1000C). To be in a position to carry out this search for truth, however, one must search oneself and purify one's soul, Plutarch argues (Adv. Col. 1118C-E).