Nothing is true. Everything is permitted. The obvious answer.
But there is one, that now gives me goosebumps, specially knowing of how the Ezio's trilogy developed, which is said between a dialogue with Ezio and his brother at the beginning of Assassin's Creed II:
"It is a good life we lead brother.
The best, may it never change.
And may it never change us."
And BOOM, the song burst epicly presenting us the title ASSASSIN'S CREED II with a grand angle of Firenze.
"You condemn what you do not understand." -Ezio at the start of Brotherhood I believe, when him and Mario are escaping the Vatican. --- psn: randy_marshh not changing sig till bears win the superbowl started 12-30-09
"Curse him! Curse the Christian King and his army of infidels! They go against the will of God, and must be made to pay. Everywhere they ride, they leave only suffering in their wake. They say it is a Crusade. A Crusade for what? Ignorance? Violence? Madness? We must resist! We must fight them in any way we can!" --- Good friends and a bottle of pills