Sri Aurobindo - Nirvana

All is abolished but the mute Alone.
The mind from thought released, the heart from grief,
Grow inexistent now beyond belief;
There is no I, no Nature, known-unknown.
The city, a shadow picture without tone,
Floats, quivers unreal; forms without relief
Flow, a cinema's vacant shapes; like a reef
Foundering in shoreless gulfs the world is done.

Only the illimitable Permanent
Is here. A Peace stupendous, featureless, still.
Replaces all, - what once was I, in It
A silent unnamed emptiness content
Either to fade in the Unknowable
Or thrill with the luminous seas of the Infinite.

Sri Aurobindo

http://www.poemhunter.com/poem/nirvana-32/