Nothing Gold Can Stay

Nature’s first green is gold,
Her hardest hue to hold.
Her early leaf’s a flower; 
But only so an hour.
Then leaf subsides to leaf,
So Eden sank to grief,
So dawn goes down to day
Nothing gold can stay.
--Robert Frost, 1923 (1924 Pulitzer Prize for Poetry winner)

Ferreting out exactly what Robert Frost's religious beliefs were are difficult. Things are compounded by the losses in his life. However, as this poem alludes to the Garden of Eden, the first creation by God, and how it was sunk by the first sin (Genesis 3), it is being incorporated on this Christian site.
Although this poem seems bleak, it does speak of cycles of life that will continue to come about in this imperfect world: there will be new flowers or leaves on the tree next year; there will be a dawn tomorrow; people will die but leave their descendants after them.