The Kingdom of Heaven, O man, requires no other price than yourself. The value of it is yourself. Give yourself for it and you shall have it.
Saint AugustineWho can control this when its appetite is aroused? No one! In the very movement of this appetite, then, it has no "mode" that responds to the decisions of the will ... Yet what he wishes he cannot accomplish ... In the very movement of the appetite, it has no mode corresponding to the decision of the will.
Saint Augustine