"I chastise my body," he says, "and bring it into subjection"; that is, "I chastise it, because I want to bring it into subjection. I want to tame it, to become its master; so I give it a good beating, I starve it now and then, and treat it badly generally, that it may learn to obey me." That is the great idea of mortification, my brethren, in a nutshell. Every one knows that if you want to break a vicious horse you have to put him through a pretty severe course of treatment before he will be subject to your will. And every one knows that the body is naturally unruly, like a vicious horse; the body is always craving for things which it would be better that it should not have, and it will have them in spite of us if we do not take care. So, to subject it thoroughly to reason, we must put it through a severe course; otherwise, some time or other, it will get the better of us, and have its own way. And there is a great deal more need of taming our own bodies than there is of breaking horses. For the horse can only kill our body, but our bodies can kill our souls; and furthermore, if we do not want to take the trouble of breaking a horse, we can shoot him, or get somebody else to take him; but we can not in anyway lawfully get rid of our bodies till such time as God sees fit to take them from us. We are tied fast to them, and cannot get away. So we are absolutely obliged to conquer them, if we do not want to be conquered by them. In other words, if we do not want our bodies to be a frequent cause and occasion of mortal sin to us, we must to some considerable extent practise mortification. {125} That is the Catholic and true doctrine, as taught by the church, and put into practice, in some degree at least, by all the faithful who obey her laws. And it is also common sense. Every one must admit that the body is the great cause and source of mortal sin to far the greater number of people, and that if its appetites were thoroughly brought under control our souls would be saved from very great dangers, which otherwise they cannot escape. If, then, it is any object to escape these dangers--and no sensible man can deny that it is--one does not need to be a Christian, but only to have the gift of reason, and to look a little into himself and into the world about him, and he must grant that the bodily penances and mortifications which the church insists on are not foolish or superstitious, but in the highest degree prudent and wise.