Leandros: Well, the old hound still has a bite.
Ezio: The book you carry. Where is it?
Leandros: Ah! Niccolò Polo’s journal? This will do no good, not now. We have found one of the Masyaf keys already, and are closing in on the rest.
Ezio: What is in that library is not for you. Not the Templars.
Leandros: Ah, you can have Altaïr’s books, Ezio. We only want guidance. We only want directions… to the location of the Grand Temple.
Ezio: Grand Temple? Tell me more. Now!
Ezio: Requiescat in pace… bastardo (bastard).
Fun fact: This scene is an easter egg in Watch Dogs.