Book 4
11
The first and highest purity or impurity, then, is that which is formed in the soul. But you will not find the impurity of the soul and body to be alike. For what stain can you find in the soul, unless it be something which renders it impure in its operations? Now, the operations of the soul are its pursuits and avoidances, its desires, aversions, preparations, intentions, assents. What, then, is that which renders it defiled and impure in these operations? Nothing else than its perverse judgments. So that the impurity of the soul consists in wicked principles, and its purification in forming right principles; and that is pure which has right principles, for that alone is unmixed and undefiled in its operations.
