Abba Dorotheos said: "Once, when Abba Zosimas was talking about humility, one of the Sophist philosophers was there, listening to what he was saying. He wanted to learn exactly what he meant and he asked him, "Tell me, why do you consider yourself to be a sinner? Do you not know that you are a saint? Do you not know that you have virtues? Can you not see that you are practising the commandments? How can you believe that you are a sinner since you do all these things?"