Editing Paradox (section)

=== Contradiction ===
[[Contradiction]], along with self-reference, is a core feature of many paradoxes.<ref name=":0" />  The liar paradox, "This statement is false," exhibits contradiction because the statement cannot be false and true at the same time.<ref>{{cite book |author1= |url=https://books.google.com/books?id=LbPRUBorL-sC |title=C.I. Lewis: The Last Great Pragmatist |publisher=SUNY Press |year=2005 |isbn=978-0-7914-8282-7 |edition= |page=376}} [https://books.google.com/books?id=LbPRUBorL-sC&pg=PA376 Extract of page 376]</ref>  The barber paradox is contradictory because it implies that the barber shaves himself if and only if the barber does not shave himself.

As with self-reference, a statement can contain a contradiction without being a paradox.  "This statement is written in French" is an example of a contradictory self-referential statement that is not a paradox and is instead false.<ref name=":0" />