This guy speaks 26 languages? I find that hard to believe. I mean, you can know at least a little bit of each language, but only a true savant would even come close to being fluent in even 6.
I'll stick with my three current languages, French, Chinese and Japanese. I have no need, now nor ever, to be fluent in more than at most 5 foreign languages. (But who knows, someday I may eat my words.)
Languages, from most fluent to more recent: English, Spanish, French, Japanese, Mandarin.