Megarian school, Greek school of philosophy at Mégara from late 5th cent. to early 3d cent. B.C. Influenced by the Eleatic school and by Socrates, it was known for its interest in logic and for argumentation. Its founder was Euclid of Megara, who maintained that good was an unchanging absolute under various names, such as wisdom, God, and mind. His successor Eubulides was famed for his paradoxes, such as "If I say that I am lying, am I telling the truth?" Other members included Stilpo, Diodorus Cronus, Cleinomachus, and Panthoides. No Megarian writings survive.