Anime: The example of Lagann: out of this world (Tengen Toppa Gurren Lagann)

You know, Simon, all those when maybe if... Don't let them bring you down. What you choose yourself is the reality of your universe.

Everyone is wrong. It is a fact. So what? If a person made a mistake, someone can give him a thrashing, so be it. But punishing yourself is not the point. Sometimes, it seems that the mistake you made cannot be corrected, but you are happy to try. We have to fight, to resist. Then little by little something will happen.

Viral: Barbarians are worthless! Is that how real warriors fight?
Kamina: And you imagine that the stones are my fists!
Miral: Fists are fists and stones are stones!
Kamina: What, just found out? How old are you, boy?

He and I are the same. I believe in him because I believe in myself. And I believe in myself because I believe in him. It's indivisible to me. Simply put, we are brothers in spirit.

This village was so poor that it could live only 50 people. To live, we sacrificed each other. But the surface for us was a world where I could live all, I fought believing it. But... I was wrong. The upshot was that I almost sacrificed more lives.
This sin I have to atone for.

A real man doesn't die even if you kill him.

One might believe in his hand, marching to the dream light!

The chance of success of this mission was zero percent. But apparently, in your case, any calculations are meaningless.