the systematic understanding that the Stoics honor with the name of episteme, “knowledge” or “understanding.” A quick reminder: for the Stoics, the criterion of truth is what they call a cognitive impression, that is, an impression about how things are that corresponds to how things are, and that cannot be misleading. The Stoics add that a truly wise man will never assent to non-cognitive impressions, though he may accept that some such impressions are more reasonable than others and act accordingly.
