Castor and Pollux horse breaker and the boxer / Polydeuces, my brothers" ..." – Helen, "Iliad" 3.253–255), but in the "Odyssey" they are treated as alive even though "the corn-bearing earth holds them". The author describes them as "having honour equal to gods", living on alternate days because of the intervention of Zeus. In both the "Odyssey" and in Hesiod, they are described as the sons of Tyndareus and Leda. In Pindar, Pollux is the son of Zeus while Castor is the son of the mortal Tyndareus. The theme of ambiguous parentage is not unique to Castor and Pollux; similar characterisations appear in
Europa (consort of Zeus) as "The Abduction of Europa" and "The Seduction of Europa", substituting the god Jupiter for Zeus. The myth of Europa and Zeus may have its origin in a sacred union between the Phoenician deities `Aštar and `Aštart (Astarte), in bovine form. Having given birth to three sons by Zeus, Europa married a king Asterios, this being also the name of the Minotaur and an epithet of Zeus, likely derived from the name "`Aštar". According to Herodotus' rationalizing approach, Europa was kidnapped by Greeks (probably Cretans) who were seeking to avenge the kidnapping of Io, a princess from Argos. His variant