Leda and the Swan (Peter Paul Rubens) either Zeus or Tyndareus, each man is said to be the father of all four children. Castor and Pollux were called the Dioscuri meaning “Zeus’s sons,” even though Castor was mortal because he was the son of Tyndareus and Pollux was immortal because he was the son of Zeus. According to Hermes in Lucians’ "The Dialogues of the Dead", Leda and her daughter (Helen of Troy) are the only women worthy of the title “beauties of old.” Rubens’s depictions of Leda clearly embody the phrase. With Leda’s curvy figure, alabaster skin, and golden hair, she is a sight to behold.
Castor et Pollux duty that Pollux faces: should he pursue his love of Telaira or rescue his brother? Of course, he chooses the latter. In the 1754 version, Dill remarks that that plot is more concerned with the tests that Pollux must face: he must kill Lynceus, persuade Jupiter not to oppose his journey into the Underworld, and persuade Castor not to accept the gift of immortality. While some scholars (such as Cuthbert Girdlestone, Paul-Marie Masson, and Graham Sadler) have assumed that the 1754 version was superior, Dill argues that Rameau made the changes of 1754 at a different point in his career.