Answer:
Stanza 4 of the poem best illustrates the theme that experiencing unfavorable circumstances make people more appreciative of their achievements. The speaker uses the dying soldier as someone who longed for success but could not grasp it. When people truly desire something and cannot retrieve it, their desire for it becomes greater.
Success is Counted Sweetest
BY EMILY DICKINSON
Success is counted sweetest
By those who ne’er succeed.
To comprehend a nectar
Requires sorest need.
Not one of all the purple Host
Who took the Flag today
Can tell the definition
So clear of Victory
As he defeated-dying
On whose forbidden ear
The distant strains of triumph
Burst agonized and clear!
