It is otherwise with one who has care of a particular thing, and one whose providence is universal, because a particular provider excludes all defects from what is subject to his care as far as he can; whereas, one who provides universally allows some little defect to remain, lest the good of the whole should be hindered. Hence, corruption and defects in natural things are said to be contrary to some particular nature; yet they are in keeping with the plan of universal nature; inasmuch as the defect in one thing yields to the good of another, or even to the universal good: for the corruption of one is the generation of another, and through this it is that a species is kept in existence. Since God, then, provides universally for all being, it belongs to His providence to permit certain defects in particular effects, that the perfect good of the universe may not be hindered, for if all evil were prevented, much good would be absent from the universe. A lion would cease to live, if there were no slaying of animals; and there would be no patience of martyrs if there were no tyrannical persecution. Thus Augustine says (Enchiridion 2):  “Almighty God would in no wise permit evil to exist in His works, unless He were so almighty and so good as to produce good even from evil. It would appear that it was on account of these two arguments to which we have just replied, that some were persuaded to consider corruptible things—e.g., casual and evil things—as removed from the care of divine providence.”