[3] Zeller Op. cit. p. 63.

    [4] Zeller Op. cit. p. 67.

    [5] Brochard Op. cit. 329.

The whole tone of the Hypotyposes, with the constant references to the Stoics as living present opponents, shows that these lectures must have been delivered in one of the centres of Stoicism.  As Alexandria and Athens are out of the question, all testimony points to Rome as having been the seat of the Pyrrhonean School, for at least a part of the time that Sextus was at its head.  We would then accept the teacher of Sextus, in whose place he says he taught, as the Herodotus so often referred to by Galen[1] who lived in Rome.  Sextus’ frequent references to Asclepiades, whom he mentions ten different times by name in his works,[2] speak in favour of Rome in the matter under discussion, as Asclepiades made that city one of the centres of medical culture.  On the other hand, the fact that there is no trace of the Hypotyposes in later Roman literature, with the one exception of the works of Hippolytus, as opposed to the wide-spread knowledge of them shown in the East for centuries, is incontestable historical proof that the Sceptical School could not long have had its seat at Rome.  From the two passages given above from Sextus’ work against physics, he must either have written that book in Alexandria, it would seem, or have quoted those passages from some other work.  May we not then conclude, that Sextus was at the head of the school in Rome for a short time, where it may have been removed temporarily, on account of the difficulty with the Empiricists, implied in Hyp.  I. 236-241, or in order to be better able to attack the Stoics, but that he also taught in Alexandria, where the real home of the school was certainly found?  There it probably came to an end about fifty years after the time of Sextus, and from that centre the Sceptical works of Sextus had their wide-spread influence in the East.

    [1] Galen VIII. 751.

    [2] Bekker Index.

The books of Sextus Empiricus furnish us with the best and fullest presentation of ancient Scepticism which has been preserved to modern times, and give Sextus the position of one of the greatest men of the Sceptical School.  His works which are still extant are the Pyrrhonean Hypotyposes in three volumes, and the two works comprising eleven books which have been united in later times under the title of [Greek:  pros mathematikous], one of which is directed against the sciences in general, and the other against the dogmatic philosophers.  The six books composing the first of these are written respectively against grammarians, rhetoricians, geometricians, arithmeticians, astronomers and musicians.  The five books of the latter consist of two against the logicians, two against physics, and one against systems of morals.  If the last short work of the first book directed against the arithmeticians is combined