Ode to a Nightingale

In "Ode to a Nightingale", Keats is sitting under the shade of the trees and listening to the sound of the Nightingale singing. 

Within the first stanza, he lets the sound of the bird make him forget about his troubles and pain. 

This idea is repeated in the second stanza as he is also drinking wine and lets the alcohol and the bird's song give him the power to "leave the world unseen, / And with thee fade away into the forest dim:" (19-20). 

It's in stanza three that I first see Keats contradicting himself. 

"Fade far away, dissolve, and quite forget

What thou amon the leaves hast never known,

The weariness, the fever, and the fret

Here, where men sit and hear each other groan;

Where palsy shakes a few, sad, last gray hairs,

Where youth grows pale, and spectre-thin, and dies;"

Instead of forgetting the troubles that are outside of the trees that he sits underneath, he contemplates them. It is sickness and death that he would like to forget as he listens to the bird, and yet he uses the whole stanza to explore them. 

In stanza four, it's as if he realizes that he's thinking about them and startles himself. "Away! away! for I will fly to thee" (31). 

Though Keats is making it seem as though the Nightingale is making him forget about death, I think instead, he is using the ode to beg the nightingale to help him forget. 

There also seems to be a jealousy of the nightingale, who Keats claims "wast not born for death, immortal Bird!" (61). This jealousy also supports the idea that he is asking the Nightingale to take him far away from his troubles and help him forget about death.