Quote of the day by Robert Frost , “The afternoon knows what the morning never suspected,” looks at how time changes what people understand about life. The quote uses the movement of a day as a metaphor for human life. Morning represents youth, new beginnings and ideas that have not yet been tested. Afternoon represents maturity and the knowledge gained through experience. The message is that people cannot know everything at the beginning of their journey. As time passes, events, mistakes and experiences can change how they understand themselves and the world.