Who is there?

“A man knocked repeatedly on the door of the Beloved, longing for union with the Divine. A voice from within asked, “Who is it?” He answered, “It is I.” But the door remained closed, and his longing grew more intense over the years.

Finally, after long years of inner transformation, he returned to the door and when asked again, said, “It is You.” At that moment the door opened effortlessly.”

Jalāl al-Dīn Rūmī (1207-1273)

Persian Sufi Poet and Mystic

Source: School of Practical Philosophy