Wojciech Żełaniec

In this article the author argues that the 'Liar' Paradox sentence: "This sentence is false" is neither true nor false because it does not express any proposition or "Satz" in the sense of Bernard Bolzano. The difficulty left open is that by a similar line of reasoning also the sentence "This sentence is true" would not express any proposition, yet it is sometimes taken to be true (on the strength of a theorem by Loewe)