"If there is anything I have learned in my travels across the Planes, it is that many things may change the nature of a man. Whether regret, or love, or revenge or fear - whatever you believe can change the nature of a man, can. I've seen belief move cities, make men stave off death, and turn an evil hag's heart half-circle. This entire Fortress has been constructed from belief. Belief damned a woman, whose heart clung to the hope that another loved her when he did not. Once, it made a man seek immortality and achieve it. And it has made a posturing spirit think it is something more than a part of me."
— The Nameless One, Planescape: Torment
"The unreal is more powerful than the real. Because nothing is as perfect as you can imagine it. Because it's only intangibles, ideas, concepts, beliefs, fantasies that last. Stone crumbles. Wood rots. People, well, they die."
— Chuck Palahniuk
"No army is big enough to conquer the galaxy. But faith alone can overturn the universe."
— Ecclesiarch Deacis IX, Warhammer 40,000
"We have created our myth. The myth is a faith, it is passion. It is not necessary that it shall be a reality. It is a reality by the fact that it is a good, a hope, a faith, that it is courage. Our myth is the Nation, our myth is the greatness of the Nation! And to this myth, to this grandeur, that we wish to translate into a complete reality, we subordinate all the rest."
"A god's power comes directly from belief in it...Religion sounds a lot like politics."
— Atsuro, reviewing over the real plans of the Shomonkai.
"Belief matters more than truth. Every moment, belief in imaginary things alters lives while truth sits unnoticed and waits." -— Hakim, Loreweaver
— Magic: The Gathering, Gossamer Phantom
"I asked him, 'Do you believe it's real?' He almost started crying and said, 'Yes, I do think it's real' and I said, 'Then that's all that matters.'"
— Selena Gomez, 2009 D23 Expo, September 16, 2009. [note]http://d23.disney.go.com/articles/091609_NF_FS_WizardsWaverly.html[/note]
Nerd: (after witnessing the ninja's impressive playthrough) That's unbelievable!
"Please let magic be real, please let magic be real, please let magic be real. I believe that magic is real right now. I believe so hard in its reality that it is becoming slightly less fake before our very eyes. I believe its fakeness was just a lie coughed up from a dark magician's spurious asshole. I believe in fairies. I believe dragons aren't bullshit. I believe heartily in the giggles of all the cherubs in heaven and the metric tonnes of special stardust they consume each day to fuel their laughter. I believe with the conviction of a million frothing zealots in the combined pranks of a billion leprechauns strong, and in the tiny erections they get from playing them. But most of all, I believe in YOU, Rufio.
I BELIEVE IN YOU.
Aw fuck who am I kidding magic is fake as shit."
"It is not the strength of your faith but the object of your faith that actually saves you."
— Tim Keller speaking against this trope.