The same holds of pleasure. For it is the highest achievement for one who has had trial of it, afterwards to abstain. For what great thing is it, if a man restrains himself in what he knows not? He, in fulfilment of the precept, according to the Gospel, keeps the Lord’s day, when he abandons an evil disposition, and assumes that of the Gnostic, glorifying the Lord’s resurrection in himself. Further also, when he has received the comprehension of scientific speculation, he deems that he sees the Lord, directing his eyes towards things invisible, although he seems to look on what he does not wish to look on; chastising the faculty of vision, when he perceives himself pleasurably affected by the application of his eyes; since he wishes to see and hear that alone which concerns him.