There is no mistake; there has been no mistake; and there shall be no mistake.

In response to William Huskisson declaring there had been a mistake, and he had not intended to resign, after Wellington chose to interpret a letter to him detailing his obligation to vote for a measure opposed by him as a letter of resignation. As quoted in The Military and Political Life of Arthur Wellesley: Duke of Wellington (1852) by "A Citizen of the World", and in Wellingtoniana (1852), edited by John Timbs