Analysis of The Elder's Rebuke

'Listen! When your hair, like mine,
Takes a tint of silver gray;
When your eyes, with dimmer shine,
Watch life's bubbles float away:

When you, young man, have borne like me
The weary weight of sixty-three,
Then shall penance sore be paid
For those hours so wildly squandered;
And the words that now fall dead
On your ear, be deeply pondered—
Pondered and approved at last:
But their virtue will be past!

'Glorious is the prize of Duty,
Though she be 'a serious power';
Treacherous all the lures of Beauty,
Thorny bud and poisonous flower!

'Mirth is but a mad beguiling
Of the golden-gifted time;
Love—a demon-meteor, wiling
Heedless feet to gulfs of crime.

'Those who follow earthly pleasure,
  Heavenly knowledge will not lead;
Wisdom hides from them her treasure,
  Virtue bids them evil-speed!

'Vainly may their hearts repenting.
  Seek for aid in future years;
Wisdom, scorned, knows no relenting;
  Virtue is not won by fears.'

Thus spake the ice-blooded elder gray;
The young man scoffed as he turned away,
Turned to the call of a sweet lute's measure,
Waked by the lightsome touch of pleasure:
Had he ne'er met a gentler teacher,
Woe had been wrought by that pitiless preacher.