In addition to her numerous treaties on theology, history and botany, Hildegard also invented a constructed, auxiliary language (previously) called Lingua Ignota—that is, the unknown language written in twenty-three stylised glyphs (see also) and translated mostly by the large lexical volume of her notes and the occasional Latin or German parallel gloss.
Albeit much of this interpretation is a matter of conjecture, it further was unclear if anyone else could read her writings and whether she intended the script to be a universal and ideal one or a secret, holy language.
