A paradox is a sentence of logic that can be neither right nor wrong.
Like the simple sentence of 'This sentence is a lie.' is a paradox. If the sentence is true, then it is a lie, as it says. But if it is a lie It can't be true. A lie cannot also be the truth. So the sentence being true makes it a lie.
If the sentence is a lie, then it is not as it says, it is true. But that is just what the sentence says. So that makes it true. So the sentence being a lie makes it true.
It logic you can't wrap your brain around. I have no idea how to use it in a sentence other than in reference to such a statement.
at 1:43 PM on Oct. 23, 2010