 Unlike the messenger telling us ‘No man is an immortal’, the skeptic has trouble telling us, ‘There is no knowledge’. According to Sextus Empiricus, assertion expresses belief that one knows what is asserted (Outlines of Pyrrhonism, I., 3, 226). He condemns the assertion ‘There is no knowledge’ (though not the proposition expressed by the assertion) as dogmatic skepticism. Sextus prefers agnosticism about knowledge rather than skepticism (considered as “atheism” about knowledge). Yet it is just as inconsistent to assert ‘No one can know whether anything is known’. For that conveys the belief that one knows that no one can know whether anything is known.