Becoming a Noble does not automatically mean one can
speak every language in existence. If you feel your
character would have learned a particular language,
that is fine. However, unless you have a fairly high
aspect and have made it your mission to speak the
tongue of every human society, there will be lots
of languages you cannot speak.
That said, virtually all Nobles exert themselves to
learn the Angelic tongue since this is the language
most spirits naturally speak in. Fortunately, it
is a fairly simple (the Angels would say "elegant")
language so this can usually be done within a few
months of commencement for even the least linguistically
inclined Nobility.