Weakness of the body also breaks the powers of the soul and makes the talent of the mind to grow feeble; nor can it accomplish anything good by its weakness. Enough of this excess! For whatever is done without moderation is salutary, but whatever is done immoderately is dangerous and turns to the opposite. It is proper, therefore, to be moderate and temperate in every work. For whatever is excessive is dangerous; just as water, if it bestows too much rain, not only has not use, but also brings danger.
Saint Isidore of Seville