The document discusses Bill Russell's experience playing in the 1965 NBA championship series as a member of the Boston Celtics. Russell describes moments in some games where both teams would rise to an unprecedented level of play, becoming more than just a physical contest and achieving a "magical" state where they were intensely competitive yet playing beautifully together. As an example, the document highlights the fourth quarter of the fifth game where the Celtics went on a 20-0 run to blow open a close game and win the championship, yet Russell wished the opposing Lakers had played better to help the Celtics reach their highest level.