Titus of Bostra
Catena Aurea · Lukasevangelium 18
And a certain ruler asked him, saying, Good Master, what shall I do to inherit eternal life? And Jesus said unto him, Why callest thou me good? none is good, save one, that is, God. Thou knowest the commandments, Do not commit adultery, Do not kill, Do not steal, Do not bear false witness, Honour thy father and thy mother. And he said, All these have I kept from my youth up. Now when Jesus heard these things, he said unto him, Yet lackest thou one thing: sell all that thou hast, and distribute unto the poor, and thou shalt have treasure in heaven: and come, follow me. And when he heard this, he was very sorrowful: for he was very rich.
But you may observe that these commandments consist in not doing certain things; that if thou hast not committed adultery, thou art chaste; if thou stealest not, honestly disposed; if thou bearest not false witness, truth-telling. Virtue then we see is rendered easy through the goodness of the Lawgiver. For He speaks of avoiding of evil, not practising of good. And any cessation from action is easier than any actual work.