In animos:  Orelli with one MS. reads animis; if the MSS. are correct the assertion of Krebs and Allgayer (Antibarbarus, ed. 4) “imprimere wird klas sisch verbunden in aliqua re, nicht in aliquam rem,” will require modification. Species et quasdam formas:  [Greek:  eide kai gene], quasdam marks the fact that formas is a trans.  I have met with no other passage where any such doctrine is assigned to a sceptic.  As it stands in the text the doctrine is absurd, for surely it must always be easier to distinguish between two genera than between two individuals.  If the non before vos were removed a better sense would be given.  It has often been inserted by copyists when sed, tamen, or some such word, comes in the following clause, as in the famous passage of Cic Ad Quintum Fratrem, II. 11, discussed by Munro, Lucr. p. 313, ed. 3.

Sec.59. Illud vero perabsurdum:  note the omission of est, which often takes place after the emphatic pronoun. Impediamini:  cf. n. on 33. A veris:  if visis be supplied the statement corresponds tolerably with the Academic belief, if rebus be meant, it is wide of the mark. Id est ... retentio:  supposed to be a gloss by Man., Lamb., see however nn. on I. 6, 8. Constitit:  from consto, not from consisto cf. 63 qui tibi constares. Si vera sunt:  cf. 67, 78, 112, 148.  The nonnulli are Philo and Metrodorus, see 78. Tollendus est adsensus:  i.e. even that qualified assent which the Academics gave to probable phenomena. Adprobare:  this word is ambiguous, meaning either qualified or unqualified assent.  Cf. n. on 104. Id est peccaturum:  “which is equivalent to sinning,” cf.  I. 42. Iam nimium etiam:  note iam and etiam in the same clause.

Sec.60. Pro omnibus:  note omnibus for omnibus rebus. Ista mysteria:  Aug. Contra Ac. III. 37, 38 speaks of various doctrines, which were servata et pro mysteriis custodita by the New Academics.  The notion that the Academic scepticism was merely external and polemically used, while they had an esoteric dogmatic doctrine, must have originated in the reactionary period of Metrodorus (of Stratonice), Philo, and Antiochus, and may perhaps from a passage of Augustine, C.  Ac. III. 41 (whose authority must have been Cicero), be attributed to the first of the three (cf.  Zeller 534, n.).  The idea is ridiculed by Petrus Valentia (Orelli’s reprint, p. 279), and all succeeding inquirers. Auctoritate:  cf. 8, 9. Utroque:  this neuter, referring to two fem. nouns, is noticeable, see exx. in Madv. Gram. 214 c.