Analysis of Inscription For A Gravestone

I am not dead, I have only become inhuman:
That is to say,
Undressed myself of laughable prides and infirmities,
But not as a man
Undresses to creep into bed, but like an athlete
Stripping for the race.
The delicate ravel of nerves that made me a measurer
Of certain fictions
Called good and evil; that made me contract with pain
And expand with pleasure;
Fussily adjusted like a little electroscope:
That's gone, it is true;
(I never miss it; if the universe does,
How easily replaced!)
But all the rest is heightened, widened, set free.
I admired the beauty
While I was human, now I am part of the beauty.
I wander in the air,
Being mostly gas and water, and flow in the ocean;
Touch you and Asia
At the same moment; have a hand in the sunrises
And the glow of this grass.
I left the light precipitate of ashes to earth
For a love-token.