Paul Tillich on "Certainty of calling..."

There are many amongst us who believe within themselves that they can never become good theologians, that they could do better in almost any other realm. Yet they cannot imagine that their existence could be anything other than theological existence.
Even if they had to give up theology as their vocational work, they would never cease to ask the theological question. It would pursue them into every realm. They would be bound to it, actually, if not vocationally. They could not be sure that they could fulfil its demands, but they would be sure that they were in its bondage.
They who believe those things in their hearts belong to the assembly of God. They are grasped by the Divine Spirit. They have received the gift of knowledge. They are theologians.