14. But let us take from the Gospels also the similitudes of those things which we have mentioned, in which is described a certain rock, having on it a little superficial earth, on which, when a seed falls, it is said quickly to spring up; but when sprung up, it withers as the sun ascends in the heavens, and dies away, because it did not cast its root deeply into the ground.[491] Now this rock undoubtedly represents the human soul, hardened on account of its own negligence, and converted into stone because of its wickedness. For God gave no one a stony heart by a creative act; but each individual’s heart is said to become stony through his own wickedness and disobedience. As, therefore, if one were to blame a husbandman for not casting his seed more quickly upon rocky ground, because seed cast upon other rocky soil was seen to spring up speedily, the husbandman would certainly say in reply: “I sow this soil more slowly, for this reason, that it may retain the seed which it has received; for it suits this ground to be sown somewhat slowly, lest perhaps the crop, having sprouted too rapidly, and coming forth from the mere surface of a shallow soil, should be unable to withstand the rays of the sun.” Would not he who formerly found fault acquiesce in the reasons and superior knowledge of the husbandman, and approve as done on rational grounds what formerly appeared to him as founded on no reason? And in the same way, God, the thoroughly skilled husbandman of all His creation, undoubtedly conceals and delays to another time those[492] things which we think ought to have obtained health sooner, in order that not the outside of things, rather than the inside, may be cured. But if any one now were to object to us that certain seeds do even fall upon rocky ground, _i.e._ on a hard and stony heart, we should answer that even this does not happen without the arrangement of Divine Providence; inasmuch as, but for this, it would not be known what condemnation was incurred by rashness in hearing and indifference in investigation,[493] nor, certainly, what benefit was derived from being trained in an orderly manner. And hence it happens that the soul comes to know its defects, and to cast the blame upon itself, and, consistently with this, to reserve and submit itself to training, _i.e._ in order that it may see that its faults must first be removed, and that then it must come to receive the instruction of wisdom. As, therefore, souls are innumerable, so also are their manners, and purposes, and movements, and appetencies, and incitements different, the variety of which can by no means be grasped by the human mind; and therefore to God alone must be left the art, and the knowledge, and the power of an arrangement of this kind, as He alone can know both the remedies for each individual soul, and measure out the time of its cure. It is He alone then who, as we said, recognises the ways of individual men, and