Languages, arguably the biggest part of a culture, are constantly dying out. A variety of languages is akin to a variety of cultures, but as we see languages morph, get eaten by more important or larger languages, they disappear, and with them, a distinct culture.
"Of the 6,500 languages in the world, more than half are expected to die within the next century, and many more are declining. It's estimated that two languages die out every month."
This was taken from BBC also. Source. It is all about languanges, how they die, and how to save them. And here is a list of extict languages.
I take Latin in school, and it is absolutely incredible how much thought went into writing. The Aeneid, in the third line, is written "multum ille et terris iactatus et alto" which translates roughly to "that one having been tossed about much both on land and on sea." Multum and iactatus agree, and alto and ille agree, causing a sort of image of the hero being thrown about. Language isn't anywhere near as much of an art form as it once was, and in my opinion, that is a shame.