Similarly Lord Morley has written (Diderot, vol. ii, p. 20): "The purity of the family, so lovely and dear as it is, has still only been secured hitherto by retaining a vast and dolorous host of female outcasts ... upon whose heads, as upon the scapegoat of the Hebrew ordinance, we put all the iniquities of the children of the house, and all their transgressions in all their sins, and then banish them with maledictions into the foul outer wilderness and the land not inhabited."
Horace, Satires, lib. i, 2.
Augustine, De Ordine, Bk. II, Ch. IV.
De Regimine Principum (Opuscula XX), lib. iv, cap. XIV. I am indebted to the Rev. H. Northcote for the reference to the precise place where this statement occurs; it is usually quoted more vaguely.