for when it simplifies twofold and ambiguous expressions, and when it solves specious plausibilities entangled in sophisms, and utterly destroys seductive deceits, the greatest allurement and ruin to the soul, by means of its own expressive and clear language, and its unambiguous demonstrations, it makes the whole mind smooth like wax, and ready to receive all the innocent and very praiseworthy impressions of sound natural and moral philosophy.
 These then are the professions and promises made by the husbandry of the soul, "I will cut down all the trees of folly, and intemperance, and injustice, and cowardice; and I will eradicate all the plants of pleasure, and appetite, and anger, and passion, and of all similar affections, even if they have raised their heads as high as heaven. And I will burn out their roots, darting down the attack of flame to the very foundations of the earth, so that no portion, nay, no trace, or shadow whatever, of such things shall be left; and I will destroy these things, and I will implant in those souls which are of a childlike age, young shoots, whose fruit shall nourish them. And those shoots are as follows: the practise of writing and reading with facility; an accurate study and investigation of
 
the works of wise poets; geometry, and a careful study of rhetorical speeches, and the whole course of encyclical education. And in those souls which have arrived at the age of puberty or of manhood, I will implant things which are even better and more perfect, namely, the tree of prudence, the tree of courage, the tree of temperance, the tree of justice, the tree of every respective virtue. And if there be any tree belonging to what is called the wild class, which does not bear eatable fruit, but which is able to be a fence to and a protector of that which is eatable, that also I will manage, not for its own sake, but because it is calculated by nature to be of use to what is necessary and very useful.
 Therefore, the allwise Moses attributes to the just man a knowledge of the husbandry of the soul, as an act consistent with his character, and thoroughly suited to him, saying, "Noah began to be a husbandman." But to the unjust man he attributes the task of tilling the ground, which is an employment bearing the heaviest burdens without any knowledge.