Let me take a higher illustration;--we have to choose between the yoke of virtue and the iron yoke of vice.
We are under a far more spiritual and searching law than that written in any statute-book, or administered by any court. Every man carries within his own heart the court, the tribunal; the culprit and the judge. And here too, if law is not obeyed, the result is not liberty, but the slavery of lawlessness.
No man can ponder his own nature and make without feeling that on every fibre of him is stamped a great law which he is bound to obey, and that on every fibre of him is impressed the necessity of part of his nature coercing, restraining, or spurring other parts of it. For, if we take stock of ourselves, what do we find? The broad basis of the pyramid, as it were, is laid in the faculties nearest the earth, the appetites which are inseparable from our corporeal being, and these know nothing about right or wrong, but are utterly blind to such distinctions. Put a loaf before a hungry man, and his mouth waters, whether the loaf belongs to himself or whether it is inside a baker's window.
Then above these, as the next course of the pyramid, there are other desires, sentiments, affections, and emotions, less grossly sensuous than those of which I have been speaking, but still equally certain to be excited by the presence of their appropriate object, without any consideration of whether law is broken or kept in securing of it. Above these, which are, so to speak, branded on their very foreheads with the iron of slavery, stand certain faculties which are as clearly anointed to rule as the others are intended to serve. There is reason or intelligence, which is evidently meant to be eyes to these blind instincts and emotions of desire, and there is what we call the power of will, that stands like an engine-driver with his hand upon the lever which will either stop the engine or accelerate its revolutions. It says to passions and desires Go! and they go; and, alas! it sometimes says Halt! and they will not halt. Then there is conscience, which brings to light for every man something higher than himself. A great philosopher once said that the two sublimest things in the universe were the moral law and the starry heavens; and that law I ought' bends over us like the starry heavens with which he associated it. No man can escape from the pressure of duty, and on every man is laid. by his very make, the twofold obligation, first to look upwards and catch the behests of that solemn law, and then to turn his eyes and his strength inwards and coerce or spur, as the case may be, the powers of his nature, and rule the kingdom within himself.
Now, as long as a man lets the ruling parts of his nature guide the lower faculties, he feels comparatively no pressure from the yoke. But, if he once allows beggars to ride on horseback whilst princes walk--sense and appetite and desire, and more or less refined forms of inclination, to take the place which belongs only to conscience interpreting duty--then he has exchanged the easy yoke for one that is heavy indeed.
What does a man do when, instead of loyally accepting the conditions of his nature, and bowing himself to serve the all-embracing and all-penetrating law of duty, he sets up inclination of any sort in its place? What does he do? I will tell you. He unships the helm; he flings compass and sextant overboard; he fires up the furnaces, and screws down the safety-valve, and says, Go ahead! And what will be the end of that, think you? Either an explosion or a crash upon a reef; and you may take your choice of which is the better kind of death--to be blown up or to go down. Keep within the law of conscience, and let it govern all inclinations, and most of all the animal part of your nature; and you will feel little pressure, and no pain, from the yoke. Shake it off, and there is fulfilled in the disobedient man the threatening of my text, which rightly translated ought to be, Thou hast broken the yokes of wood, and thou hast made instead of them yokes of iron.'
For do you think it will be easy to serve the base-born parts of your nature, when you set them on the throne and tell them to govern you? Did you never hear of such a thing as a man's vices getting such a hold on him that, when his weakened will tried to shake them off, they laughed in his face and said, Here we are still ? Did you never hear of that other solemn truth--and have you never experienced how true it is?--that no man can say, I will let my inclination have its fling this once ? There are never this onces.' or very, very seldom. When you are glissading down a snowy Alpine slope, you cannot stop when you like, though you strike your alpenstock ever so deep into the powdery snow. If you have started, away you must go. God be thanked! the illustration does not altogether apply, for a man can stop if he will repent, but he cannot stop unless he does. Did you never hear that a teaspoonful of narcotic to-day will have to be a tablespoonful in a week or two, to produce the same effect? Are there not plenty of men who have said with all the force that a weakened will has left in it, I will never touch a drop of drink again, as long as I live, God helping me'?--and they have gone down the street, and they have turned in, not at the first or the second public-house, but at the fourth or the fifth. The! brother, they promised them liberty, but they are the servants of corruption.' Fix this in your minds. He that committeth sin is the slave of sin,' of the sin that he commits. Do not put off the easy yoke of obedience to conscience and duty, or you will find that there is an iron one, with many a sharp point in its unpolished surface rubbing into your skin and wounding your shoulders. It's wiser to be good than bad. It's safer to be meek than fierce.' Thou hast broken the yokes of wood'; it is not difficult to do that; thou hast made instead of them yokes of iron.' That is my second point.