"I went by the field of the slothful, and by the vineyard of the man void of understanding; and lo, it was all grown over with thorns, and nettles had covered the face thereof, and the stone wall thereof was broken down. Then I saw and considered it well; I looked upon it and received instruction."--_Solomon._
"How shall we escape if we neglect so great salvation?"--_Hebrews._
"We have as possibilities either Balance, or Elaboration, or Degeneration."--_E. Ray Lankester._
In one of his best known books, Mr. Darwin brings out a fact which may be illustrated in some such way as this: Suppose a bird fancier collects a flock of tame pigeons distinguished by all the infinite ornamentations of their race. They are of all kinds, of every shade of color, and adorned with every variety of marking. He takes them to an uninhabited island and allows them to fly off wild into the woods. They found a colony there, and after the lapse of many years the owner returns to the spot. He will find that a remarkable change has taken place in the interval. The birds, or their descendants rather, have all become changed into the same color. The black, the white and the dun, the striped, the spotted, and the ringed, are all metamorphosed into one--a dark slaty blue. Two plain black bands monotonously repeat themselves upon the wings of each, and the loins beneath are white; but all the variety, all the beautiful colors, all the old graces of form it may be, have disappeared. These improvements were the result of care and nature, of domestication, of civilization; and now that these influences are removed, the birds themselves undo the past and lose what they had gained. The attempt to elevate the race has been mysteriously thwarted. It is as if the original bird, the far remote ancestor of all doves, had been blue, and these had been compelled by some strange law to discard the badges of their civilization and conform to the ruder image of the first. The natural law by which such a change occurs is called _The Principle of Reversion to Type_.
It is a proof of the universality of this law that the same thing will happen with a plant. A garden is planted, let us say, with strawberries and roses, and for a number of years is left alone. In process of time it will run to waste. But this does not mean that the plants will really waste away, but that they will change into something else, and, as it invariably appears, into something worse; in the one case, namely, into the small, wild strawberry of the woods, and in the other into the primitive dog-rose of the hedges.
If we neglect a garden plant, then, a natural principle of deterioration comes in, and changes it into a worse plant. And if we neglect a bird, by the same imperious law it will be gradually changed into an uglier bird. Or if we neglect almost any of the domestic animals, they will rapidly revert to wild and worthless forms again.
Now the same thing exactly would happen in the case of you or me. Why should Man be an exception to any of the laws of Nature? Nature knows him simply as an animal--Sub-kingdom _Vertebrata_, Class _Mammalia_, Order _Bimana_. And the law of Reversion to Type runs through all creation. If a man neglect himself for a few years he will change into a worse man and a lower man. If it is his body that he neglects, he will deteriorate into a wild and bestial savage--like the de-humanized men who are discovered sometimes upon desert islands. If it is his mind, it will degenerate into imbecility and madness--solitary confinement has the power to unmake men's minds and leave them idiots. If he neglect his conscience, it will run off into lawlessness and vice. Or, lastly, if it is his soul, it must inevitably atrophy, drop off in ruin and decay.
We have here, then, a thoroughly natural basis for the question before us. If we neglect, with this universal principle staring us in the face, how shall we escape? If we neglect the ordinary means of keeping a garden in order, how shall it escape running to weeds and waste? Or, if we neglect the opportunities for cultivating the mind, how shall it escape ignorance and feebleness? So, if we neglect the soul, how shall it escape the natural retrograde movement, the inevitable relapse into barrenness and death?