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"Plan A had worked. Plan B had failed. Everything depended on Plan C, and there was one drawback to this: he had only ever planned as far as B."
"A demon can get into real trouble, doing the right thing." He nudged the angel. "Funny if we both got it wrong, eh? Funny if I did the good thing and you did the bad one, eh?" "Not really," said Aziraphale."

Good Omens: The Nice and Accurate Prophecies of Agnes Nutter, Witch is a 1990 novel written by the English authors Terry Pratchett and Neil Gaiman.
"Plan A had worked. Plan B had failed. Everything depended on Plan C, and there was one drawback to this: he had only ever planned as far as B."
"Death and Famine and War and Pollution continued biking toward Tadfield. And Grievous Bodily Harm, Cruelty to Animals, Things Not Working Properly Even After Youve Given Them A Good Thumping But Secretly No Alcohol Lager, and Really Cool People traveled with them."
"Now, I know what youre thinking, Sergeant Shadwell. Youre thinking that any second now this head is going to go round and round, and Im going to start vomiting pea soup. Well, Im not. Im not a demon. And Id like you to listen to what I have to say."
"He is Not that Which He Says he Is"
"The redhaired woman in the corner of the hotel bar was the most successful war correspondent in the world. She now had a passport in the name of Carmine Zuigiber; and she went where the wars were. Well. More or less. Actually she went where the wars werent. Shed already been where the wars were."
"He rather liked people. It was a major failing in a demon. Oh, he did his best to make their short lives miserable, because that was his job, but nothing he could think up was half as bad as the stuff they thought up themselves. They seemed to have a talent for it. It was built into the design, somehow. They were born into a world that was against them in a thousand little ways, and then devoted most of their energies to making it worse."