|(philosophy)||liar paradox - A sentence which asserts its own falsity,
e.g. "This sentence is false" or "I am lying". These
paradoxical assertions are meaningless in the sense that there
is nothing in the world which could serve to either support or
refute them. Philosophers, of course, have a great deal more
to say on the subject.|
["The Liar: an Essay on Truth and Circularity", Jon Barwise and John Etchemendy, Oxford University Press (1987). ISBN 0-19-505944-1 (PBK), Library of Congress BC199.P2B37].