[Vampyr]

I remember one of my favorite episodes was when Vegeta got transformed into Majin Vegeta, and when he refused to obey a command, he screamed out:

"YOU MAY HAVE INVADED MY MIND AND MY BODY, BUT THERE'S ONE THING A SAIYAN NEVER LOSES, HIS PRIDE!"

You could use part of that. For example: "There's one thing a Saiyan never loses, His Pride!"

Some More:
Vegeta (During flashback scene): Strength is the only thing that means anything to me!

Goku (To Frieza after winding him): Your pride has been damaged. You have challenged and lost, and worst of all, it was to a mere monkey, right?