How do these three lines reflect the theme that it is foolish to think the carefree days of youth can last?

These lines are from the poem Fern Hill, written by Dylan Thomas.

These lines reflect the theme that it is foolish to think the carefree days of youth can last because:

"I ran my heedless ways,"  heedless is the keyword here, the speaker was careless and did not appreciate what he had, he never even imagined that one day he would be looking back at his childhood and miss these aspects.

The poem reads:

"And honored among foxes and pheasants by the gay house

Under the new made clouds and happy as the heart was long,

in the sun born over and over,

I ran my heedless ways."

These three lines reflect the theme that it is foolish to think the carefree days of youth can last because they explain how unaware the speaker is that the innocence of childhood is fleeting.

The word that helps draw this conclusion is heedless. Heedless is defined as a lack of care or attention. In this case, the speaker did not care or pay attention to the fact that childhood is fleeting.

the author is showing that it is the insatisfaction of basic needs that brings about the protests such as the strikes.if workers do not earn enough to buy food and feed their families and themselves in order to continue working, what is the use of working? besides, another message from the author is that of the owners of factories should be worried about ensuring their furure by having a second and third generation of workers in their industries.if they do not hear the workers demands, they will not have any more workers to make their pockets full.