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The most memorable McCain quotes in his HBO documentary

John McCain speaking
John McCain being presented with a medal. Photo: Alex Wong/Getty Images

Senator John McCain has been one of the most influential political voices for decades. The Arizona senator partnered with HBO to give that voice a new platform in an illuminating profile about McCain's political life through the new documentary "For Whom the Bell Tolls."

The bottom line: As McCain continues to fight brain cancer, this documentary shows us his triumphs and mistakes as a senator as well as a glimpse into his thinking while living with his diagnosis.