I'm sorry to say that I had not heard of the theologian, Joseph Sittler, before I found a passage from his book Gravity and Grace from which I offer the following:
St. Augustine, at the beginning of his Confessions, makes a great and beautiful statement: "Thou has made us for thyself, O Lord, and our hearts are restless until they rest in thee." Back of that statement lies a proposition which says that the human is created for transcendence. It is the Jewish and Christian belief that we are meant for a selfhood that is more than our own selves—that we are by nature created to envision more than we can accomplish, to long for that which is beyond our possibilities.
I am so struck by the words "a selfhood that is more than our own selves". It merits considerable reflection, I think.
You can read more excerpts right here.