“Essentially a soldier, the Christian is always on the lookout. He has sharper ears and hears an undertone that others miss; his eyes see things in a particularly candid light, and he senses something to which others are insensible, the streaming of a vital current through all things. He is never submerged in life, but keeps his head and shoulders clear of it and his eyes free to look upward. Consequently he has a deeper sense of responsibility than others. When this awareness and watchfulness disappear, Christian life loses its edge; it becomes dull and ponderous.”