Where did Churchill say success is going from failure to failure without losing your enthusiasm?

Winston Churchill expressed the idea that "success is going from failure to failure without losing your enthusiasm" in a speech delivered at the Harvard graduation ceremony in 1941. This quote encapsulates his belief in resilience and perseverance in the face of adversity, emphasizing the importance of maintaining a positive attitude despite setbacks. Churchill's insights have since become a motivational reminder for many facing challenges.