Bernal discusses Aeschylus's play "The Suppliants", which describes the arrival in Argos from Egypt of the "Danaids", daughters of Danaus. Cadmus was believed to have introduced the Phoenician alphabet to Greece. Herodotus also mentions Eastern influences. Thucydides did not, which Bernal explains with his nationalistic wish to set up a sharp distinction between Greeks and barbarians. Plutarch attacked Herodotus' view that the Greeks had learned from barbarians. Yet Alexander the Great was very interested in Egypt; Plutarch himself wrote a work "On Isis and Osiris", part of the "Moralia", which is a major source on Egypt. Admiration for Egypt was widespread in the Hellenistic and Roman civilizations, especially in the Neoplatonic school. Hermeticism was based on writings attributed to Egyptian Hermes Trismegistus, the so-called Hermetica or "Hermetic corpus". These pro-Egyptian currents influenced Christianity, Judaism and Islam, as well as Renaissance figures such as Copernicus, Ficino and Giordano Bruno. It was demonstrated in 1614 that the Hermetic corpus was not very ancient at all and originated in late antiquity, though more recent scholarship has established that parts of it do probably have a Pharaonic origin. Casaubon's textual analysis partly discredited the Hermetic corpus, but Bernal maintained that respect for Ancient Egypt survived and contributed to the Enlightenment in the 18th century. The Freemasons are particularly relevant.