The wikipedia article on Ingo is here http://en.wikipedia.org/wiki/Ingo_Moln%C3%A1r. Note the accented spelling. Thus the wikiquote xref on that article does not find this quote page. I'm just a drive by user of wikiquote, so do not know how best to fix this... user:shoka on wikipedia. anonymous here
PS the reverse link works because Wikipedia has a redirect page for the unaccented spelling...