Gemini represents the twins Castor and Polydeuces (Pollux is the Latin form of his name); they were known to the Greeks as the Dioscuri, literally meaning ‘sons of Zeus’. However, mythologists disputed whether both really were sons of Zeus, because of the unusual circumstances of their birth. This duality also represents exchange and interaction. The sign of Gemini is closely associated with exchange of ideas, communication, and trade. The sign of Gemini is thought to be very adaptable and flexible, sometimes to the point of "being" two different personalities.