"Any card—so long as it exists—has a power that is needed."

this-wreckage:

This is an excellent ask, wow! THANK YOU!!

There are several contenders but it has to be this speech he makes toward the end of the Doma arc (it’s from the episode after the Mirror Knights are destroyed, where he, Yugi and Jounouchi wake up floating in a void):

“It is certainly inconceivable for those who view life through the facts of our world’s history. However, the microscopic world exists unseen by the naked eye. As does the dark void of the universe. And with it, existence mankind can only fathom. When it is impossible to truly see, humans are capable of creating an entire world of possibility through their imaginations! This unlimited potential that can alter the future… That is what we call imagination!”

I don’t think I can even put into words how much I love this. It’s important to me on a really deep philosophical, almost spiritual level. And I’m not even kidding.

Another contender is what he says to Franz in episode 85 of GX. It’s simple, but it means a lot to me: “You will have to keep living.” Because this is so true. He’s speaking from experience. There is no way to erase what you regret or easily repair things that hurt. But you have to keep living even when it seems impossible, and life does get better. That’s one of the reasons I love Pegasus so much as a character.