liar from Crete
One of the most famous paradoxes comes from crete Epimendes. For several hundreds of years, philosophers and students around the world has been pondering based on his claim. The assertion was short and sweet: "All Cretes lie."
If so this is true, that all cretes lie then the crete Epimenides' does not lie. But if he does not lie, then he cant be speaking true.