In the opening paragraph of John Updike’s novel Rabbit, Run, the main character, Harry “Rabbit” Angstrom, comes upon a group of boys playing basketball. Rabbit himself played basketball when he was a boy, but now he is a grown man with a wife, a small child, a job, and various other adult responsibilities. As he looks at the boys enjoying their ballgame, he thinks to himself,
the kids keep coming, they keep crowding you up.
Rabbit realizes that he is no longer young. He realizes that he becomes older each minute of his life and that his youth is receding. He misses his youth, but he realizes that there are always new “kids” who “keep coming.” In other words, new generations of young people are always appearing, making the preceding generations feel older and older. Updike here presents Rabbit engaging in a moment of sober reflection about his past, his present, and his likely future – a future in which he will inevitably grow older, less young, than he already is.