De Agricultura

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.