Inscriptions on new archaeological finds in the Aegean, examined alongsidelinguistic evidence relating to Greek and Phrygian vowels, are here used toexplore the origins and spread of the Greek alphabet. The ‘invention’ ofvowels happened just once, with all of the various Greek, Phrygian andItalic alphabets ultimately deriving from this single moment. The ideaspread rapidly, from an absence of writing in the ninth century BC to casualusage, including jokes, by 725 BC. The port of Methone in the northernAegean emerges as a probable candidate for the site of origin. A place whereGreeks and Phoenicians did business together, with international networks;was this where Semitic, Greek and Phrygian letters first coalesced?