IX. (39) Those, then, who permit the flock committed to their charge to satiate themselves all at once with all the things that they desire, we must call keepers of sheep; but those, on the contrary, we should entitle shepherds, who supply their flocks with only so much as is necessary and proper for them; cutting off and utterly rejecting all superfluous and useless extravagance and abundance, which is not less injurious than want and deficiency, and who guard with great prudence against the possibility of the flock becoming diseased through their want of care and indolence, praying that those diseases, which at times are liable to attack flocks from external causes, may not visit theirs. (40) And they take equal care that it may not straggle about at random and get scattered, holding out to them as an object of fear one who will chastise those who never obey reason, and inflicting continual punishment, moderate when applied to those who err only in such a degree as admits of a remedy, but very severe when laid upon those whose wickedness is uncurable; for though in its essence it may appear an abominable thing, nevertheless punishment is the greatest good to foolish persons, great as the remedies of the physician are to those who are ill in the body.