"I do not wonder at what men suffer, but I wonder often at what they lose."—Ruskin.
"Death," wrote Faber, "is an unsurveyed land, an unarranged Science." Poetry draws near Death only to hover over it for a moment and withdraw in terror. History knows it simply as a universal fact. Philosophy finds it among the mysteries of being, the one great mystery of being not. All contributions to this dead theme are marked by an essential vagueness, and every avenue of approach seems darkened by impenetrable shadow.
But modern Biology has found it part of its work to push its way into this silent land, and at last the world is confronted with a scientific treatment of Death. Not that much is added to the old conception, or much taken from it. What it is, this certain Death with its uncertain issues, we know as little as before. But we can define more clearly and attach a narrower meaning to the momentous symbol.
The interest of the investigation here lies in the fact that Death is one of the outstanding things in Nature which has an acknowledged spiritual equivalent. The prominence of the word in the vocabulary of Revelation cannot be exaggerated. Next to Life the most pregnant symbol in religion is its antithesis, Death. And from the time that "If thou eatest thereof thou shalt surely die" was heard in Paradise, this solemn word has been linked with human interests of eternal moment.
Notwithstanding the unparalleled emphasis upon this term in the Christian system, there is none more feebly expressive to the ordinary mind. That mystery which surrounds the word in the natural world shrouds only too completely its spiritual import. The reluctance which prevents men from investigating the secrets of the King of Terrors is for a certain length entitled to respect. But it has left theology with only the vaguest materials to construct a doctrine which, intelligently enforced, ought to appeal to all men with convincing power and lend the most effective argument to Christianity. Whatever may have been its influence in the past, its threat is gone for the modern world. The word has grown weak. Ignorance has robbed the Grave of all its terror, and platitude despoiled Death of its sting. Death itself is ethically dead. Which of us, for example, enters fully into the meaning of words like these: "She that liveth in pleasure is dead while she liveth?" Who allows adequate weight to the metaphor in the Pauline phrase, "To be carnally minded is Death;" or in this, "The wages of sin is Death?" Or what theology has translated into the language of human life the terrific practical import of "Dead in trespasses and sins?" To seek to make these phrases once more real and burning; to clothe time-worn formulæ with living truth; to put the deepest ethical meaning into the gravest symbol of Nature, and fill up with its full consequence the darkest threat of Revelation—these are the objects before us now.
What, then, is Death? Is it possible to define it and embody its essential meaning in an intelligible proposition?
The most recent and the most scientific attempt to investigate Death we owe to the biological studies of Mr. Herbert Spencer. In his search for the meaning of Life the word Death crosses his path, and he turns aside for a moment to define it. Of course what Death is depends upon what Life is. Mr. Herbert Spencer's definition of Life, it is well known, has been subjected to serious criticism. While it has shed much light on many of the phenomena of Life, it cannot be affirmed that it has taken its place in science as the final solution of the fundamental problem of biology. No definition of Life, indeed, that has yet appeared can be said to be even approximately correct. Its mysterious quality evades us; and we have to be content with outward characteristics and accompaniments, leaving the thing itself an unsolved riddle. At the same time Mr. Herbert Spencer's masterly elucidation of the chief phenomena of Life has placed philosophy and science under many obligations, and in the paragraphs which follow we shall have to incur a further debt on behalf of religion.
The meaning of Death depending, as has been said, on the meaning of Life, we must first set ourselves to grasp the leading characteristics which distinguish living things. To a physiologist the living organism is distinguished from the not-living by the performance of certain functions. These functions are four in number—Assimilation, Waste, Reproduction, and Growth. Nothing could be a more interesting task than to point out the co-relatives of these in the spiritual sphere, to show in what ways the discharge of these functions represent the true manifestations of spiritual life, and how the failure to perform them constitutes spiritual Death. But it will bring us more directly to the specific subject before us if we follow rather the newer biological lines of Mr. Herbert Spencer. According to his definition, Life is "The definite combination of heterogeneous changes, both simultaneous and successive, in correspondence with external co-existences and sequences,"[55] or more shortly "The continuous adjustment of internal relations to external relations."[56] An example or two will render these important statements at once intelligible.
The essential characteristic of a living organism, according to these definitions, is that it is in vital connection with its general surroundings. A human being, for instance, is in direct contact with the earth and air, with all surrounding things, with the warmth of the sun, with the music of birds, with the countless influences and activities of nature and of his fellow-men. In biological language he is said thus to be "in correspondence with his environment." He is, that is to say, in active and vital connection with them, influencing them possibly, but especially being influenced by them. Now it is in virtue of this correspondence that he is entitled to be called alive. So long as he is in correspondence with any given point of his environment, he lives. To keep up this correspondence is to keep up life. If his environment changes he must instantly adjust himself to the change. And he continues living only as long as he succeeds in adjusting himself to the "simultaneous and successive changes in his environment" as these occur. What is meant by a change in his environment may be understood from an example, which will at the same time define more clearly the intimacy of the relation between environment and organism. Let us take the case of a civil-servant whose environment is a district in India. It is a region subject to occasional and prolonged droughts resulting in periodical famines. When such a period of scarcity arises, he proceeds immediately to adjust himself to this external change. Having the power of locomotion, he may remove himself to a more fertile district, or, possessing the means of purchase, he may add to his old environment by importation the "external relations" necessary to continued life. But if from any cause he fails to adjust himself to the altered circumstances, his body is thrown out of correspondence with his environment, his "internal relations" are no longer adjusted to his "external relations," and his life must cease.
In ordinary circumstances, and in health, the human organism is in thorough correspondence with its surroundings; but when any part of the organism by disease or accident is thrown out of correspondence, it is in that relation dead.