In a poem Epimenides wrote:
Cretans are liars. Epimenide himself was a Cretan. If Epimenides is a Cretan and a liar, then the statement of "Cretans are liars" is a lie.
This means that all Cretans tell the truth, and Epimenides statement is true.
In a poem Epimenides wrote:
Cretans are liars. Epimenide himself was a Cretan. If Epimenides is a Cretan and a liar, then the statement of "Cretans are liars" is a lie.
This means that all Cretans tell the truth, and Epimenides statement is true.