Again, when he sees a vine flourishing and luxuriant he bends down its young shoots to the ground, digging trenches to receive them, and again
 Numbers xix. 15. 
 Genesis iv. 12. 
 Genesis ix. 90. 
 
heaping up the ground on the top of them; and they at no distant period, instead of parts, become whole trees, and instead of daughters they become mothers, having moreover put off the old age which is the usual companion of maternity. For, having desisted from distributing and apportioning its nourishment amongst numerous offspring, inasmuch as they are able to support themselves, that which was previously weak from being drained by this cause becomes so fully satiated as to grow fat and young again.
 And I have seen another man who cut away the less desirable shoots of trees which admitted of cultivation, as soon as they appeared above the ground, and left only a small piece adhering to the root itself. And then taking a branch in good condition from another tree of a good sort, he scraped away the one shoot down till he came to the pith, and the shoot which was attached to the root he cut at no great depth, but opening it just sufficiently to make the union perfect, and then putting into the cleft the shoot which he had pared away he fitted it in; and from these two shoots one single tree of one united nature sprang up, each portion giving to the other that which was useful to it; for the roots support the shoot which has been fitted into them, and prevent it from drying up and withering, and the shoot which has been inserted as a reward for its nourishment supplies the root with good fruit in requital. There are also an innumerable host of other operations in farming which proceed on rules of art, which it would be superfluous to enumerate on the present occasion, for we have only dwelt on this point at such length for the purpose of showing the difference between the man who is only a cultivator of the earth, and one who is a farmer.
 Accordingly the bad man never ceases from employing, without any of the principles of art, his earth-like body, and the outward senses which are akin to it, and all the external objects of these outward senses, and he injures his miserable soul, and he also injures what he fancies he is benefiting exceedingly, his own body.
But the good man, for he has skill in the art of a farmer, manages the whole of his materials in accordance with the principles of art and reason; for when the outward senses behave insolently, being borne forward with irresistible impetuosity towards the external objects of the outward senses,
 
they are easily restrained by some contrivance among those which art has devised; but when an impetuous passion in the soul becomes violent, bringing forth voluptuous itchings and ticklings arising from pleasure or from appetite, or on the other hand, stings and agitation, caused by fear or grief, it is softened by the previously prepared saving medicine; and if any evil devouring as it goes, proceeds further, like a sister of the cancrous disease, which creeps over the body, it is cut out by reason which proceeds in its operations in accordance with knowledge.