Sophrosyne an important topic for Plato. It is main subject of the dialogue "Charmides", wherein several definitions are proposed but no conclusion reached; however the dramatic context connotes moral purity and innocence. An etymological meaning of sophrosyne as "moral sanity" is proposed in "Cratylus" 411e. Plato's view of sophrosyne is related to Pythagorean "harmonia" ("Republic" 430e−432a, 442c) and closely linked with Plato’s tripartite division of the soul: "sophrosyne" is the harmonious moderation of the appetitive and spirited parts of the soul by the rational part (e.g., "Phaedrus" 237c−238e). For the Stoic, Zeno of Citium, "sophrosyne" is one of the four chief
Ancient Greek coinage of ancient Greek coins are held by museums around the world, of which the collections of the British Museum, the American Numismatic Society, and the Danish National Museum are considered to be the finest. The American Numismatic Society collection comprises some 100,000 ancient Greek coins from many regions and mints, from Spain and North Africa to Afghanistan. To varying degrees, these coins are available for study by academics and researchers. There is also an active collector market for Greek coins. Several auction houses in Europe and the United States specialize in ancient coins (including Greek) and there is also a