This speech against the dictator in Germany was given by Winston Churchill to Harrow School on October 29, 1941
Never give in, never give in, never, never, never, never-in nothing, great or small, large or petty – never give in except to convictions of honour and good sense. Never yield to force; never yield to the apparently overwhelming might of the enemy.
Winston Churchill
Born: 30 November 1874
Died: 24 January 1965
Full speech is here: