The Megarian logician is known as Eubulides of Miletus.

Eublides is known for formulating the paradox known as the Liar Paradox, which is a paradox that arises from the statement "This statement is false." If the statement is true, then it is false, and if it is false, then it is true, leading to a self-contradiction. Eubulides is also known for his contributions to the study of logic and for his work on the concept of a perfect being.