Bargain with the Devil

Come, said the Magician, give me your soul, and in exchange, I will give you power. I will grant you power to make Kings and remove Kingdoms, I will grant you power to look into the minds of people, I will grant you power to make people look on favor upon you, I will grant you the power to turn stone into gold and water into wine.

Nay, said I, for what use is such power to me, when my soul is not mine? Who shall control such power, if I am not in control of myself any longer?