  to conclude that (1) is true. This all shows that if (1) is not true, then (1) is true. Similarly, we can also argue that if (1) is true then (1) is not true. So (1) seems to be both true and not true: hence the paradox. As stated above, the three-valued approach to the paradox takes the liar sentence, (1), to be neither true nor false. Exactly how, or even whether, this move blocks the above reasoning is a matter for debate. 