It means that no blue ribbon is forever. Someday - if the world doesn't explode itself in the meantime - someone will run a two-minute mile in the Olympics. It may take a hundred years or a thousand, but it will happen. Because there is no ultimate blue ribbon. There is zero, and there is eternity, and there is mortality, but there is no ultimate.
Source: (Mrs. Todd's Shortcut)
Contributed by: Zaady