§§54--63. Summary. The Academics fail to see that such doctrines do away with all probability even. Their talk about twins and seals is childish (54). They press into their service the old physical philosophers, though ordinarily none are so much ridiculed by them (55). Democritus may say that innumerable worlds exist in every particular similar to ours, but I appeal to more cultivated physicists, who maintain that each thing has its own peculiar marks (55, 56). The Servilii were distinguished from one another by their friends, and Delian breeders of fowls could tell from the appearance of an egg which hen had laid it (56, 57). We however, do not much care whether we are able to distinguish eggs from one another or not. Another thing that they say is absurd, viz. that there may be distinction between individual sensations, but not between classes of sensations (58). Equally absurd are those "probable and undisturbed" sensations they profess to follow. The doctrine that true and false sensations are indistinguishable logically leads to the unqualified εποχη of Arcesilas (59). What nonsense they talk about inquiring after the truth, and about the bad influence of authority! (60). Can you, Cicero, the panegyrist of philosophy, plunge us into more than Cimmerian darkness? (61) By holding that knowledge is impossible you weaken the force of your famous oath that you "knew all about" Catiline. Thus ended Lucullus, amid the continued wonder of Hortensius (62, 63). Then Catulus said that he should not be surprised if the speech of Lucullus were to induce me to change my view (63).