[101] [cap.18] On this account also the self-instructed Isaac prays to the lover of wisdom, that he may be able to comprehend both those good things which are perceptible by the outward senses, and those which are appreciable only by the intellect. For he says, "May God give thee of the dew of heaven, and of the fatness of the earth," [101] a prayer equivalent, to May he in the first place pour upon thee a continual and heavenly rain appreciable by the intellect, not violently so as to wash thee away, but mildly and gently like dew, so as to benefit thee. And in the second place, may he bestow upon thee that earthly wealth which is perceptible by the outward senses, fat and fertile, having drained off its opposite, namely poverty, from the soul and from all its parts. [102] [103] [104]