Ezio Auditore da Firenze is the protagonist of Assassin's Creed II, Brotherhood and Revelations, and Nothing is true, everything is permitted is the central maxim of the Assassin Brotherhood in the series. The line is repeated across the games as a warning against blind faith and absolute authority. Clips and game music videos, including the GMV version this audio comes from, helped spread the quote beyond players, turning a short voice line into shorthand online for stealth, rebellion and thinking for yourself.