It comes to me that there is a difference between “This statement is a lie” and “This statement is false” merely for the fact that a lie can be true. If I tell a jealous woman that her husband was seen with such-and-such a woman, the statement may be true or false, but if my intention is to inflame her jealousy and mislead her into the false belief that her husband was adulterous, then I have lied regardless of the factual nature of my statement.
Of course, language is much looser than the strict definitions of philosophy, but if we say that a lie proper requires intent and that accidental lies are faux lies, then to say “I am lying” may indeed be true in the sense that the statement is calculated to mislead the hearer to a false conclusion.
Yet the question arises in my mind as to whether statements can rightly be so reflexive to speak of themselves. Can a statement judge its own validity? The statement “This is true,” if applied to itself, can’t be true about very much at all.
Tale Told 