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
Leda and the Swan (Correggio) it in his summer palace of Sanssouci. It was confiscated by Napoleon and restored again by Pierre-Paul Prud'hon before being returned to Germany in 1814 and placed in the Berlin museums in 1830 - there Jakob Schlesinger painted a third replacement for Leda's head. However, the 1604 copy shows that even this restoration censored Correggio's original composition, giving Leda a chaste rather than orgasmic expression and removing the backwards twist of her head that Correggio had originally intended (similar to that of Io in his "Jupiter and Io"). Leda and the Swan (Correggio) Leda and the Swan is an oil