To his personal secretary John Colville the evening before Operation Barbarossa, the German invasion of the Soviet Union. As quoted by Andrew Nagorski in The Greatest Battle (2007), Simon & Schuster, pp. 150–151 ISBN 0743281101
More quotes by Winston Churchill
For myself I am an optimist — it does not seem to be much use being anything else.
To improve is to change, so to be perfect is to have changed often.
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Quote text and notes from Wikiquote: Winston Churchill (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.