Those therefore who love the Lord as it is written with all their heart and with all their soul, and observe the commandments that were given by him, and follow him as far as men can rise to the height, are said to produce fruits to the number of a hundred; and to the number of sixty those who hold a middle place; and after the same fashion those who produce thirtyfold also, who are lower than these. Though all received the saving word with the very same faith, and therefore all were with equal honour termed 'good soil', yet all had not the same capacity. Accordingly therefore among the crowns that are provided in the future blessed life they will receive abodes and honours on different scales, those which our Lord signified when he said in the gospel, "Many are the abodes in my Father's house". And, when as in a parable he was about to go on a journey, he distributed talents among his bondmen to use, for it is plainly written thus: "To one he gave five talents, to another two, and to another one, to each of them according to his own capacity, and immediately started on his journey". Words agreeing with these were spoken by Paul also in writing to the Corinthians, "Every man shall receive his own reward, according to his own labour"
Taken from LXXIII. – OF THE SAME, AS TO WHAT IS THE MEANING OF THE SAYING THAT THOSE WHO HAVE RECEIVED THE HEAVENLY SEED WILL PRODUCE FRUIT A HUNDREDFOLD AND SIXTYFOLD AND THIRTYFOLD , FROM THE LETTER TO DOROTHEUS THE COUNT