 Medicine, then, for Sextus Empiricus was what medicine would equally be for the late sixteenth century Sanches: a combination of empiricism and scepticism. Medicine took as much from philosophical scepticism, as philosophical empiricism took from medicine. Galen’s above critique of “indications” or indicans (cf. Maclean 2002: 308–310)—which bears a certain similarity to Sanches’ critique of demonstration and naming—is best explained by Sextus Empiricus: