CORPORAL: [trying to copy Lawrence’s snuffing a match with his fingers] Ow! It damn well ‘urts!
LAWRENCE: Certainly it hurts.
CORPORAL: Well what’s the trick then?
LAWRENCE: The trick, William Potter, is not minding if it hurts.
Robert Bolt (1924-1995) English dramatist
Lawrence of Arabia, Part 1, sc. 18 (1962) [with Michael Wilson]
Sourcing, notes: wist.info/bolt-robert/77145/