Watchmen across half the continent will say that Sam Vimes is as straight as an arrow, can't be corrupted, won't be turned, never took a bribe.
"You truly are incorruptible, aren't you, huh? You won't kill me, outta some misplaced sense of self-righteousness... and I won't kill you, because you're just too much fun."
''People have tried to use him from the moment he put out his hand and summoned his lightsaber to come to him. Vader wanted to turn him. Palpatine wanted his services. Palpatine's clone managed to enslave him for a time. But Luke is strong, stronger than he knows. And Luke has a single purpose. I suppose you could say that he has a pure heart. Luke doesn't hunger after power. In some ways I don't think he understands those who do."
Good characters in fiction are the very devil. Not because most authors have little material to make them of, but because we as readers have a strong subconscious wish to find them incredible.
— C. S. Lewis, The Novels of Charles Williams
But down these mean streets a man must go who is not himself mean, who is neither tarnished nor afraid.
— Raymond Chandler, "The Simple Art of Murder"
You appear to be... The docile type. You're very kindhearted. Very helpful. You can make friends with anyone. You're a wonderful person. ......Is that going overboard? I don't think so. You yourself should be the best judge of that.
— The first Pokémon Mystery Dungeon game, if you get a docile character on the opening quiz
Chaos claims the unwary or the incomplete. A true man may flinch away from its embrace, if he is stalwart, and he girds his soul with the armour of contempt.
— Gideon Ravenor, The Spheres of Longing
"Always remember, son, even though you are the perfect candidate for brainwashing in this town, you’re also too pure and good-hearted to be corrupted"
— Grandpa, Moral Orel
Weed, your spirit is too pure.
— Jerome, Ginga Densetsu Weed