I was quoting from Swami Akhandananda Saraswati, who was a great scholar and saint. Most of his works are in Hindi, as some in Sanskrit, none of it is in English. He had wonderful insights into Vedanta, and he was a master of both Advaita Vedanta and the Bhakti of Bhagavata. What does it mean? Where the substratum and that which it supports is one reality, that is pure being. That is not what sathe pure being means. It is the existence itself.