“A human being is a part of the whole called by us “universe”…
He experiences himself, his thoughts and feelings as something separated from the rest, a kind of optical delusion of his consciousness. This delusion is a kind of prison for us. ”
Commentary
As I see it, the prison which Albert Einstein referred to is the egoic aspect of our existence as compared to THE TRUTH which is our divine consciousness. This is the part of us that will continue onwards after death and into the many other reincarnations of our existence.