Some of my favs are...
Speak softly and carry a big stick.
-Roosevelt I think
I regret not the things I've done but those I did not do.
-I forget, if anyone knows, tell me
I may disagree with what you have to say but I will fight to the death to defend your right to say it.
-Voltaire
Upon what meat doth this our Caesar feed that he has grown so great?
-Shakespeare
The whole world sees me as just one person, I want just one person to see me as the whole world.
-I made this up. It was based on someone's signature link though, I just changed it so it sounded better. No idea where its from originally.