Dialogue On the Hidden God (1444) is a short conversation, written by Nicholas of Cusa, between a Pagan and a Christian on the topic of God, specifically on how we might know, or not know, God. A Pagan comes across someone engaged in the act of worship, prostrate and weeping, and is curious. What is this person doing? Who are they worshipping? Why are they worshipping? The Pagan finds out that this person is a Christian and begins to probe as to what sort of God the Christian worships.
Pagan. What are you worshipping?
Christian. God.
Pagan. Who is the God you worship?
Christian. I do not know.
Until I have passed by. 