I Am Without Form Without Limit

He walked into the river when he was about, I don't know, in his young youth. He wrote this one poem that I remember. Try it on inside yourself. Feel what it feels like. I am without form without limit. I am beyond space, beyond time. I am in everything. Everything is in me. I am the bliss of the universe. Everywhere I am. Absolute existence, absolute knowledge, absolute bliss. Tattvam asi, I am man.