 I shall discuss the following aspects of Sextus’ skepticism: (i) investigation and tranquility, (ii) concepts and inference rules, (iii) belief, (iv) the formulae, (v) appearances, (vi) language, (vii) action, and (viii) the so-called special arguments (that is, arguments that do not explain the nature of Pyrrhonism, but engage with specific dogmatic theories in logic, physics, and ethics).