In Margaret Atwood's "The Blind Assassin," the quote emphasizes the insatiable nature of future generations. It suggests that children, symbolized by their "greedy little mouths," embody the unstoppable force of time, consuming everything present. This metaphor reflects the idea that the future will inevitably overshadow the current existence, as it swiftly progresses and can diminish what once held significance.

This perspective invites readers to consider the relationship between the present and the future, particularly in how the aspirations and desires of youth shape what is to come. The phrase captures a sense of urgency, implying that what we value today may be devoured by the relentless march of time, particularly through the actions and aspirations of the younger generation.