Anatolians have spoken  Indo-European ,  Semitic  and Kartvelian  languages, as well as many languages of uncertain affiliation. In fact, given the antiquity of the Indo-European  Hittite  and  Luwian  languages, some scholars have proposed Anatolia as the hypothetical center from which the Indo-European languages have radiated. [15] The  Celsus Library  in  Ephesus