Epimenides paradox

Etymology
Named after the Cretan philosopher Epimenides of Cnossos (alive circa 600 BC), who is credited with the original statement.

Noun

 * 1) A form of self-referential logical paradox associated with statements of the form "All Cretans are liars" (spoken by Epimenedes, himself a Cretan, who must therefore be lying).