driving straight on the reef. It is the engineer’s business to start them and keep them going; it is their business to turn the screw; it is somebody else’s business to look after the navigation. We have our ‘humours under lock and key’ in order that we may control them. And if we do not, we shall go all to rack and ruin. So, ‘live soberly,’ says Paul. The next requirement is, ‘righteously.’ Now, I said that that might, perhaps, be roughly explained as referring mainly to our duties to one another.