Also, "você" is actually not originally a proper formal second person. Grammatically, "você" is a third person singular. It comes from "Vossa Mercê" (something like "Your Mercy" or "Your Grace"), shortened to "vossemeçê", to "você". The origin, and still today a common gramatical construction in Portuguese in any formal or semi-formal register, is to use a periphrase in the third person to increase politeness. I guess in English it also exists, but only on the most fully formal contexts ("Does that right honourable gentleman agree...").