Helen of Troy refuge with Leda. The swan gained her affection, and the two mated. Leda then produced an egg, from which Helen emerged. The First Vatican Mythographer introduces the notion that two eggs came from the union: one containing Castor and Pollux; one with Helen and Clytemnestra. Nevertheless, the same author earlier states that Helen, Castor and Pollux were produced from a single egg. Pseudo-Apollodorus states that Leda had intercourse with both Zeus and Tyndareus the night she conceived Helen. On the other hand, in the "Cypria", part of the Epic Cycle, Helen was the daughter of Zeus and the goddess Nemesis.
Zeus and the Tortoise Zeus and the Tortoise Zeus and the Tortoise appears among Aesop’s Fables and explains how the tortoise got her shell. It is numbered 106 in the Perry Index. From it derives the proverbial sentiment that ‘There’s no place like home’. The fable tells how the king of the gods invited all the animals to his wedding but the tortoise never arrived. When asked why, her excuse was that she preferred her own home, so Zeus made her carry her house about forever after. That excuse in Greek was Οἶκος φίλος, οἶκος ἄριστος, literally ‘the home you love is the best’.