Perhaps a bit old or overdone but I still like it:
"You laugh at me because I'm different, I laugh at you because you're all the same."

And not a quote so much as my own personal motto "Always get back up, no matter how often you fall, or how hard you fall, always get back up."

Shawn Clone Jezabel- 1999 SE Sport V6 MTX- Severly wounded, comatose Silver frost/Black Exterior-Midnight Blue Interior The Firecracker- 1995 Mystique LS V6 MTX stock and backfiring like a rifle shot I have 3 loves, my God, Brittany, and my Car.