These reproductions of sounds or melodies do not require any mental effort or physical effort. The organ of voice may be used--that is, we attempt to sing. We may hum, or we can pucker our lips together and whistle. Each individual whistles in his own peculiar fashion, seldom two alike. They may be similar, but never alike. The fault may lie in the lips, the tongue, in the form of the opening made, the manner of blowing through the opening formed by the lips, the duration and strength of the expiration, dryness or moisture of the mouth, the thickness or flabbiness of cheeks, etc., etc. Hence it comes that every man has his whistle. You may take a class and train them to whistle a melody, say "Yankee Doodle." Each one will produce similar successive sounds or notes, so that that particular melody is recognized, but each one will have his own "Yankee Doodle," with peculiarities, characteristics peculiarly his own. If, for example, he is musically inclined, or has had any training in music, he or she may put a quaver or two in, as a variation, more or less. Yet each one will still own his own whistle and pipe his own "Yankee Doodle." That is just what happens with God. We have no God, we never had one, but we have been educated up to one. In childhood we already hear the first indistinct sound, and we don't know whether it is the bark of a dog or the mew of a cat. By and by, as we grow older and are ready to attend Sunday-school, or some other institution where these instructions are imparted, you learn the melody of "Yankee Doodle"--rather puzzling at first, but it comes. Variations are put in to suit special cases and special occasions, and each individual member of any one class whistles his "Yankee Doodle" to the best of his ability--entirely his own; he is perfectly happy with it; it does not in any way interfere in the ordinary pursuits in life, his pleasures, his stomach, his diversion nor his business; and really it makes no difference where he is, in the street, in the factory, in the store, on the exchange, in the hovel or in the palace, he carries his "Yankee Doodle" with him. Whistle it over a birth, over a wedding, or over a funeral, whistle it wherever you will, it is the same "Yankee Doodle." It is used on all occasions--in wars on the battlefield, or at peace on parade, etc. Thus it happens that everyone, male or female, has his or her own peculiar "Doodle." If the man or woman or child had never heard this melody they would certainly not have known anything about it, and therefore could not have enjoyed that particular melody. He or she might have heard another melody just as simple, perhaps just as stupid, but differently constructed.