For this reason, they must believe in the cause for which they are fighting. They must believe in the plan they are asked to execute, and most important, they must believe in and trust the leader they are asked to follow.

I belive that people should fight for what they believe and only what they believe.

A cause worth fighting for is worth fighting for to the end.

If you believe very strongly in something, stand up and fight for it.

Know why you’re in the fight to stay in the fight!

Before you can win the fight, you’ve got to be in the fight.

Anything is possible when people believe in a cause.

It isn’t precisely that people will fight for what they believe. They will fight, instead, to maintain the match between what they believe, what they expect, and what they desire.

Some causes are worth fighting for, some are worth dying for.

I cannot believe in anything else. A man needs heroes. He needs to believe in strength, nobility and courage. Otherwise we become sheep to be herded to the slaughterhouse of death. I believe this. I am a soldier. I try to fight for the right cause. Sometimes it is hard to know.

Belief in the mission ties in with the fourth Law of Combat: Decentralized Command (chapter 8). The leader must explain not just what to do, but why. It is the responsibility of the subordinate leader to reach out and ask if they do not understand. Only when leaders at all levels understand and believe in the mission can they pass that understanding and belief to their teams so that they can persevere through challenges, execute and win.

Sometimes you do have to fight. Where that’s true, you should fight and win.

Heretics must believe. More than anyone else in an organization, it's the person who's challenging the status quo, the one who is daring to be great, who is truly present and not just punching a clock who must have confidence in her beliefs.
Can you imagine Steve Jobs showing up for the paycheck? It's nice to get paid. It's essential to believe.

At such a time it seems natural and good to me to ask myself these questions. What do I believe in? What must I fight for and what must I fight against?