Every sentence causing a typical semantic paradox has the same meanings with it's negation and is also ambiguous.But it is not presumed that it has the same meanings with it's negation.It is wrong to talk about the truth value of such a sentence simply,in
张铁声.悖论的本质、预设与真值——答湘潭大学哲学学院王向清教授[J].重庆工商大学学报(自然科学版),2007,(8): ZHANG Tie-sheng.[J]. Journal of Chongqing Technology and Business University(Natural Science Edition),2007,(8):