But it is quite certain that she considered the Greek epoch to be by no means finished, and intended to do everything in her power to ensure its perpetuation." 1 2 The refusal of Ptolemaic dynasty rulers to speak the native language, Late Egyptian, is why Ancient Greek (i.e. Koine Greek) was used along with Late Egyptian on official court documents such as the Rosetta Stone ("Radio 4 Programmes – A History of the World in 100 Objects, Empire Builders (300 BC – 1 AD), Rosetta Stone". BBC.