It was in his speech at Uttarpara that Sri Aurobindo for the first time spoke publicly of his Yoga and his spiritual experiences.
...I looked at the jail that secluded me from men and it was no longer by its high walls that I was imprisoned; no, it was Vasudeva who surrounded me. I walked under the branches of the tree in front of my cell but it was not the tree, I knew it was Vasudeva, it was Sri Krishna whom I saw standing there and holding over me his shade. I looked at the bars of my cell, the very grating that did duty for a door and again I saw Vasudeva. It was Narayana who was guarding and standing sentry over me. Or I lay on the coarse blankets that were given me for a couch and felt the arms of Sri Krishna around me, the arms of my Friend and Lover. This was the first use of the deeper vision He gave me. I looked at the prisoners in the jail, the thieves, the murderers, the swindlers, and as I looked at them I saw Vasudeva, it was Narayana whom I found in these darkened souls and misused bodies...
I have wrapped the wide world in my wider self
And Time and Space my spirit’s seeing are.
I am the god and demon, ghost and elf,
I am the wind’s speed and the blazing star.
All Nature is the nursling of my care,
I am its struggle and the eternal rest;
The world’s joy thrilling runs through me, I bear
The sorrow of millions in my lonely breast.
I have learned a close identity with all,
Yet am by nothing bound that I become;
Carrying in me the universe’s call
I mount to my imperishable home.
I pass beyond Time and life on measureless wings,
Yet still am one with born and unborn things.