Sec.Sec.43—­45.  Summary.  The sceptics ought not to define, for (1) a definition cannot be a definition of two things, (2) if the definition is applicable only to one thing, that thing must be capable of being thoroughly known and distinguished from others (43).  For the purposes of reasoning their probabile is not enough.  Reasoning can only proceed upon certain premisses.  Again to say that there are false sensations is to say that there are true ones; you acknowledge therefore a difference, then you contradict yourselves and say there is none (44).  Let us discuss the matter farther.  The innate clearness of visa, aided by reason, can lead to knowledge (45).

Sec.43. Horum:  Lamb. harum; the text however is quite right, cf.  Madv. Gram. 214 b. Luminibus:  cf. 101. Nihilo magis:  = [Greek:  ouden mallon], which was constantly in the mouths of sceptics, see e.g.  Sext. P.H. I. 14. Num illa definitio ... transferri:  I need hardly point out that the [Greek:  horos] of the Academics was merely founded on probability, just as their “truth” was (cf. n. on 29).  An Academic would say in reply to the question, “probably it cannot, but I will not affirm it.” Vel illa vera:  these words seem to me genuine, though nearly all editors attack them. Vel = “even” i.e. if even the definition is firmly known, the thing, which is more important, must also be known.  In illa vera we have a pointed mocking repetition like that of veri et falsi in 33. In falsum:  note that falsum = aliam rem above.  For the sense cf.  Sext. P.H. II. 209 [Greek:  mochtherous horous einai tous periechontas ti ton me prosonton tois horistois], and the schoolmen’s maxim definitio non debet latior esse definito suo. Minime volunt:  cf. 18. Partibus:  Orelli after Goer. ejected this, but omnibus hardly ever stands for omn. rebus, therefore C.F.  Hermann reads pariter rebus for partibus.  A little closer attention to the subject matter would have shown emendation to be unnecessary, cf. 42 dividunt in partis, T.D. III. 24, where genus = division, pars = subdivision.

Sec.44. Impediri ... fatebuntur:  essentially the same argument as in 33 at the end. Occurretur:  not an imitation of [Greek:  enantiousthai] as Goer. says, but of [Greek:  apantan], which occurs very frequently in Sext. Sumpta:  the two premisses are in Gk. called together [Greek:  lemmata], separately [Greek:  lemma] and [Greek:  proslepsis] (sumptio et adsumptio De Div II. 108). Orationis:  as Faber points out, Cic. does sometimes use this word like ratio ([Greek:  syllogismos]), cf. De Leg. I. 48 conclusa oratio.  Fab. refers to Gell.  XV. 26. Profiteatur:  so [Greek:  hypischneisthai] is often used by Sext. e.g. A.M. VIII.