SEXTUS EMPIRICUS
SCEPTICISM
Sextus was probably a
Greek and is the primary source of most of our knowledge of Greek
scepticism. Little is known of his life,
but he seems to have studied medicine as well as philosophy, and he was head of
a sceptic school.
LOGIC
[1] Sextus is noteworthy for the claim
that the syllogism is a
circular argument form [see Pyrrhonism, 1] [a]. A major premise which is universal
('All S is P', for example) can be proved only by complete enumeration. The conclusion ('x is P') must therefore
already be included in the premiss.
METHODOLOGY/ ETHICS
[2] The greater part of Sextus's work [Pyrrhonism,
2 and 3] consists of a comprehensive account of Greek scepticism. But
he added glosses of his own [see also Against
the Dogmatists]. Scepticism, he said, involves
the rejection of all dogmatism be it in metaphysics (of whatever
variety) or epistemological
'probabilism' (associated with the Sceptics of the Academy); in other words, of all positive claims to
knowledge [a]. He distinguished three stages of the dialectic process or method of
doubt [b]. (1) The philosopher presents claims about some
phenomenon, principle, or moral law, which appear to be mutually
contradictory. Different Sceptics
identified ways of arguing (tropoi),
the number varying from thinker to thinker. (2) The second stage is the epoché or suspension
of judgement on the tropoi [c]. Sextus
seems to confine the epoché to claims
which go beyond appearances or everyday
behaviour. He here makes an important
distinction between (a) certain kinds of words which are indicative signs of
supposed entities such as substances, which we cannot experience; and (b) words
which 'commemorate', that is, remind us of other experiences we have had, for
example, bodily functions, sense experiences, even the conventional rules and
customs of our society. We need all
these, Sextus says, if we are to cope with the demands of everyday life, but he
emphasizes that we must keep an open mind as to their validity. (3) The third stage is the attainment of tranquillity
or imperturbability (ataraxia) [d] this
being the ultimate motivating force (arche)
underlying scepticism and which leads to well-being (eudaimonia) [e].
CRITICAL SUMMARY
Sextus's comprehensive bringing together of
the various strands of the Sceptic tradition the search for ataraxia, the use of dialectic, for
example, and his confining of the epoché to what others supposed to underlie phenomena, combined with a provisional
acceptance of sensory and conventional cultural data (as opposed to
'probabilism') all this made for a full-bodied and yet more open-minded and
influential philosophy. Herein lies the
importance of anti-dogmatic scepticism as an 'attitude' an attitude which was
to provide the foundation for the modern scepticism which emerged in the
sixteenth century particularly in the essays of Montaigne. But clearly it is not a system in itself; if
it were it would be self-refuting.
CONNECTIONS
Sextus Empiricus