What’s the use you learning to do right, when it’s troublesome to do right and ain’t no trouble to do wrong, and the wages is just the same?
– Mark Twain
The Adventures of Huckleberry Finn, Chapter 16. Huck wrestles with his conscience, as he saves Jim by deceiving the men looking for runaway slaves. He knew he had done wrong, but would also have felt bad if he turned Jim in.