LXXXIX. (248) “Thorns, therefore, and thistles shall it bring forth to you.” But what is it which is produced and which shoots up in the soul of the foolish man except the passions which goad and sting and wound it? Which Moses here, speaking symbolically, calls thorns, and which irrational appetite rushes upon at first like fire, and so hastens to meet, and afterwards uniting itself to them, it consumes and destroys all its own nature and actions. For Moses speaks thus:–“But if fire when it has gone forth finds thorns, and shall also burn a threshing-floor, or a crop of wheat, or a field of corn, then he who kindled the fire shall pay the Damage.”{124}{#ex 22:6.} (249) You see therefore when it has gone forth, that is to say, irrational impetuosity, it does not only burn the thorns, but finds them: for being inclined to seek out the passions, it attains to what it has been desiring to find; but when it has found it, it consumes these three things, –perfect virtue, improvement, and goodness of disposition. Moses therefore here compares virtue to a threshing-floor; for as the crops when collected are brought to the threshing-floor, so also are the good things which exist in the soul of the wise man brought to virtue; and improvement he likens to the crop of wheat, inasmuch as both the one and the other are imperfect, aiming at the end; and goodness of disposition he compares to a field of corn, because it is well adapted to receive the seeds of virtue; (250) and each of the passions he calls thistles (tribolia), because they are divisible into three parts: the passion itself, the efficient cause, and the effect which arises from the combined operation of the two. As for instance pleasure, what is pleasant, and the being pleased; appetite, the object of appetite, and the indulgence of appetite; pain, what is painful, and the suffering pain; fear, what is fearful, and the being in a state of fear.

XC. (251) “And thou shalt eat the herb of the field; in the sweat of thy brow shalt thou eat thy bread.” He here speaks of the herb of the field and of bread, as if they were synonymous, or identical with one another. The herb of the field is the food of the irrational animal; but the irrational animal is a worthless creature, which has been deprived of right reason. The outward senses are also irrational, though they are part of the soul. But the mind, which is eager for the attainment of those things which are the objects of the outward sense by means of the irrational outward senses, does not attain its desires without labour and sweat; for the life of the foolish man is very full of distress and very burdensome, since he is always aiming at and greedily coveting the things which give pleasure, and all such things as wickedness is wont to do. (252) And how long shall this last? “Until,” says God, “you return to the dust form which you were taken.” For is he not now ranked among the things of the earth, and among things which have no consistency, ever since he deserted the wisdom which is from heaven? We must consider therefore to what point he is coming back; but may we not consider whether what he says has not some such meaning as this, that the foolish mind is at all times averted from right reason, and that it has been originally taken not from any sublime nature, but from some more earthly material, and whether it is stationary, or whether it is in motion, it is always the same, and desirous of the same objects. (253) On which account, God adds that, “Dust thou art, and unto dust shalt thou return.” And this is equivalent to what has been said before. Moreover this sentence also signifies, the beginning and the end are one and the same thing. For there hadst thou beginning in the perishable bodies of the earth; and again, thou shalt end in them, during the interval of your life, between its beginning and its end, passing along a road which is not plain and easy, but rough, full of briars and thorns, the nature of which is to tear and wound thee.