9 So take these as an example, beloved Dracontius, and do not say, or believe those who say, that the bishop's office is an occasion of sin, nor that it gives rise to temptations to sin. For it is possible for you also as a bishop to hunger and thirst, as Paul did. You can drink no wine, like Timothy, and fast constantly too, like Paul, in order that thus fasting after his example you may feast others with your words, and while thirsting for lack of drink, water others by teaching. Let not your advisers, then, allege these things. For we know both bishops who fast, and monks who eat. We know bishops who drink no wine, as well as monks who do. We know bishops who work wonders, as well as monks who do not. Many also of the bishops have not even married, while monks have been fathers of children; just as conversely we know bishops who are fathers of children and monks 'of the completest kind. ' And again, we know clergy who suffer hunger, and monks who fast. For it is possible in the latter way, and not forbidden in the former. But let a man, wherever he is, strive earnestly; for the crown is given not according to position, but according to action.
Source: Letters (New Advent)