If there is anything in us, it is not our own; it is a gift of God. But if it is a gift of God, then it is entirely a debt one owes to love, that is, to the law of Christ. And if it is a debt owed to love, then I must serve others with it, not myself. Thus my learning is not my own; it belongs to the unlearned and is the debt I owe them.
- Martin Luther, Lectures on Galatians, 1519