"When I meet thousands of fans of the comic - when I realize every one of them can recite the Lantern Corps oath ('In Brightest Day, in blackest night...') - I know how important this is to people"

Ryan Reynolds is referring to the tremendous popularity of the comic book series, Green Lantern. He is expressing his amazement at the level of dedication and interest that fans have for the series. He is likewise highlighting the importance of the Lantern Corps oath, which is an essential part of the series. He is highlighting how much the series indicates to individuals, as evidenced by the truth that countless fans can recite the oath. This quote shows how much the series has affected individuals and just how much they appreciate it. It also demonstrates how much Ryan Reynolds appreciates the fans and their dedication to the series.