Abstract

By "scepticism" Naess means an activity or characteristic attitude, anti-conceptual, non-assertive, and ad hoc. The real sceptic has not yet happened on an argument with no countervailing ones, but he is a "great champion of trust and confidence and of common sense in action." This sceptic is the Pyrrhonist as pictured by Sextus Empiricus; the sceptic of twentieth century epistemology, who asserts that we don't know what we think we do, would be called an Academician. After chapters on historical, psychological, and psychiatric aspects of Pyrrhonism, the author illustrates the Academic-Sceptic distinction in a closely argued chapter on the Ayer-Chisholm analysis of "S knows that p." Naess holds that the applicability of a claim to know is a function of the definiteness of intention. Therefore, there are conditions under which the know-don't know distinction cannot be usefully applied. It is one thing, with Moore and Pap, to agree that one has got his right hand, and another to assert that "I know physical objects exist." Naess' sceptic does not commit himself when both assertion and denial involve doctrinally contaminated ways of expression.--M. B. M.