Well, if i’m to believe the future as predicted by The Legion of Super-Heroes, we won’t have to worry because everyone will speak Interlac. (nerd)
Now, meanwhile in reality, I don’t know if we’ll ever get to a universal language, but perhaps a series of languages that are all derived from the same place. Similar to how you speak "english" in Canada but it’s slightly different than the "english" I speak in America, and the "english" they speak in England or Ireland. And I don’t necessarily think it’s going to be English, either.
Love is the only universal language.