Complex sentence: As early as 1913 the "Catholic Encyclopedia" had already commented on the beginnings of the replacement of Latin by vernacular languages--but the Church still produces official liturgical texts in Latin, thus providing a clear single point of reference for translations into all other languages.
Split into simpler sentences: As early as 1913, the "Catholic Encyclopedia" commented on the beginnings of the replacement of Latin by vernacular languages. But the Church still produces official liturgical texts in Latin, thus providing a clear single point of reference for translations into all other languages.