Tuck starts out by telling Winnie about how life is constantly "moving, growing, changing, [and] never the same two minutes together." He tells her about the water and how it is always moving and changing. He reminds her that someday the water will go to the ocean. He talks about evaporation, rain, and steam. As Tuck talks, they float on the rowboat, watching the water. Then he stops using the oars to row the boat and it begins to drift. The rowboat drifts into "the rotting branches of a fallen tree." Then Tuck explains to Winnie the difficulty of their situation. He compares the family's eternal life to the boat being stuck in the branches. He tells her that they are "stuck so's [they] can't move on." They feel "dropped off... [and] left behind... [while] everywhere around [them], things is moving and growing and changing."
Winnie realizes that while the Tuck family will go on forever, her life will eventually "go out, like the flame of a candle." She realizes that she does not "want to die."