*71* Away, then, with sharp practice and trickery, which desires, of course, to pass for wisdom, but is far from it and totally unlike it. For the function of wisdom is to discriminate between good and evil; whereas, inasmuch as all things morally wrong are evil, trickery prefers the evil to the good. It is not only in the case of real estate transfers that the civil law, based upon a natural feeling for the right, punishes trickery and deception, but also in the sale of slaves every form of deception on the vendors part is disallowed. For by the aediles' ruling the vendor is answerable for any deficiency in the slave he sells, for he is supposed to know if his slave is sound, or if he is a runaway, or a thief. The case of those who have just come into the possession of slaves by inheritance is different. #Cunning is not wisdom.# *72* From this we come to realize that since nature is the source of right, it is not in accord with nature that anyone should take advantage of his neighbour's ignorance. And no greater curse in life can be found than knavery that wears the mask of wisdom. Thence come those countless cases in which the expedient seems to conflict with the right. For how few will be found who can refrain from wrong-doing, if assured of the power to keep it an absolute secret and to run no risk of punishment! *73* XVIII. Periclitemur, si placet, et in iis quidem exemplis, in quibus peccari volgus hominum fortasse non putet. Neque enim de sicariis, veneficis, testamentariis, furibus, peculatoribus hoc loco disserendum est, qui non verbis sunt et disputatione philosophorum, sed vinclis et carcere fatigandi, sed haec[330] consideremus, quae faciunt ii, qui habentur boni. L. Minuci Basili, locupletis hominis, falsum testamentum quidam e Graecia Romam attulerunt. Quod quo facilius optinerent, scripserunt heredes secum M. Crassum et Q. Hortensium, homines eiusdem aetatis potentissimos; qui cum illud falsum esse suspicarentur, sibi autem nullius essent conscii culpae, alieni facinoris munusculum non repudiaverunt. Quid ergo? satin est hoc, ut non deliquisse videantur? Mihi quidem non videtur, quamquam alterum vivum amavi, alterum non odi mortuum; *74* sed, cum Basilus M. Satrium, sororis filium, nomen suum ferre voluisset eumque fecisset heredem (hunc dico patronum agri Piceni et Sabini; o turpem notam temporum [nomen illorum]!),[331] non erat aequum principes civis rem habere, ad Satrium nihil praeter nomen pervenire. Etenim, si is, qui non defendit iniuriam neque propulsat,[332] cum potest, iniuste facit, #§ 23# ut in primo libro disserui, qualis habendus est is, qui non modo non repellit, sed etiam adiuvat iniuriam? Mihi quidem etiam verae hereditates non honestae videntur, si sunt malitiosis blanditiis, officiorum non veritate, sed simulatione quaesitae.