Sure I am of this, that you have only to endure to conquer. You have only to persevere to save yourselves, and to save all those who rely upon you. You have only to go right on, and at the end of the road, be it short or long, victory and honor will be found.
Source, in full
Remarks at the Guildhall, 4 September 1914, after the first British naval victory of World War I, the sinking of three German cruisers in the Battle of Heligoland Bight, as cited in Churchill: A Life, Martin Gilbert, Macmillan (1992), p. 279 ISBN 0805023968