EUCLID OF MEGARA, a distinguished philosopher and logician, who flourished about 400 years before Christ. The Athenians having prohibited the Megareans from entering their city on pain of death, this philosopher disguised himself in women's clothes, in order to attend the lectures of Socrates. After the death of Socrates, Plato and other philosophers went to Euclid at Megara, in order to shelter themselves from the tyrants who then governed Athens. Euclid admitted but one chief good, which he sometimes called God, sometimes Spirit, and sometimes Providence.