Answer:
Integrity
Explanation:
He explains that one cannot have integrity in themselves if they aren't willing to stand up against something unjust sometimes; no matter how impossible it seems. He clearly isn't trying to take pride in this case, and is instead really just trying his best to do whatever he can for what he believes in. He is not concerned with other people's opinions and is instead of believing in himself and his judgment. This is what he's trying to emphasize to scout; the idea of believing in yourself and your personal judgment.
