People talk of the sacrifice I have made in spending so much of my life in Africa. Can that be called a sacrifice which is simply paid back as a small part of a great debt owing to our God, which we can never repay? All these are nothing when compared with the glory which shall be revealed in and for us. I never made a sacrifice.
David Livingstone (1858). “Cambridge Lectures: Together with a Prefatory Letter by Sedgwick”, p.23