[1] _Hyp_. I. 236.

[2] _Hyp_. I. 237.

[3] _Hyp_. I. 241.

We know from the testimony of Sextus himself that he was a
physician. In one case he uses the first person for himself as a
physician,[1] and in another he speaks of Asclepius as "the
founder of our science,"[2] and all his illustrations show a
breadth and variety of medical knowledge that only a physician
could possess. He published a medical work which he refers to
once as [Greek: iatrika hupomnêmata],[3] and again as [Greek:
empeirika hupomnêmata][4] These passages probably refer to the
same work,[5] which, unfortunately for the solution of the
difficult question that we have in hand, is lost, and nothing is
known of its contents.

In apparent contradiction to his statement in _Hypotyposes_ I.,
that Scepticism and Empiricism are opposed to each other, in
that Empiricism denies the possibility of knowledge, and
Scepticism makes no dogmatic statements of any kind, Sextus
classes the Sceptics and Empiricists together in another
instance, as regarding knowledge as impossible[6] [Greek: all oi
men phasin auta mê katalambanesthai, hôster hoi apo tês
empeirias iatroi kai hoi apo tês skepseôs phiolosophoi]. In
another case, on the contrary, he contrasts the Sceptics sharply
with the Empiricists in regard to the [Greek: apodeixeis].[7]
[Greek: hoi de empeirikoi anairousin, hoi de skeptikoi en epochê