I need not say, of course, that I am not pleading for a more hilarious religious life. And, equally of course, empty frivolity, and the cult of the continual grin are insufferable things to endure either in the name of religion or anything else. Not by a single word would I lessen the condemnation which such aberrations deserve. But I do say, and with all my heart I believe that a deep, abiding well-spring of happiness--which our author calls the "joy of the Lord"--is of the very essence of true religion, and is indeed, what he asserts it, actually our strength. Actually our strength. Let us be quite clear about that. The man in whose heart there dwells this best of all joys is a strength to other people. We don’t need any one to prove that to us, I imagine. We have all been helped and revived many a time merely by contact with some hearty cheerful soul. Who, for example, that had his choice, would elect for his family physician a man with a doleful air? Have we not all found that a doctor’s cheery manner was as potent a medicine as any drug that he called by a Latin name? Ay, and even when we are in trouble, and our hearts are sad and sore, I think we would all rather see the friend whose faith in God showed in a brave and buoyant outlook than one whose religion was of the dowie and despondent sort. I have heard it said of an employee who had the gift of the joyous heart that the twinkle of his eyes was worth £100 a year to his firm. I could easily believe it, though the money value might well have been set at any figure, seeing that the thing itself is really priceless. Did not the most famous modern apostle of the duty of happiness--himself a signal proof that joy is something more than the mere easy overflow of health and animal spirits--did not Stevenson declare that "by being happy we sow anonymous benefits," and that "the entrance of such a person into a room is as if another candle had been lighted?" I take it the proof is ample that a joyous heart is a strength to others. But more, it is a strength to oneself. That may not be so obvious, and yet the result here is even more certain. Ordinary experience tells us that joy is good for us, that depression and gloom work us bodily harm. But from one province of scientific study especially there has come a wonderful array of evidence that makes it as certain as any fact can be that the happy states of mind do literally add to our strength in quite measurable directions. There is, in strict fact, no tonic in all the world like gladness.