Never give in, never give in, never, never, never—in nothing, great or small, large or petty—never give in except to convictions of honour and good sense.
Context
Delivered during World War II at Churchill's former school, Harrow, nearly a year after his previous visit. Churchill contrasted Britain's earlier isolation with its improved position, urging students never to yield to force or apparent overwhelming odds. The International Churchill Society confirms this as authentic; popular variants such as "Never, never, never give up" are inaccurate renderings.