Well, this isn't the philosophical discussion I had imagined it to be. At risk of being off-topic, I'll go with what I was thinking. A bit of context first: Dostoevsky, author of the passages I am about to quote, was once to be executed for his political affiliations on the order of the King himself. While he did not survive the execution (for as you will see, there was no execution), he was pardoned. This incident exerted a profound influence on Dostoevsky as illustrated by the following passages taken from his novel The Idiot:
"Do you know, though," cried the prince warmly, "you made that remark now, and everyone says the same thing, and the machine is designed with the purpose of avoiding pain, this guillotine I mean; but a thought came into my head then: what if it be a bad plan after all? You may laugh at my idea, perhaps--but I could not help its occurring to me all the same. Now with the rack and tortures and so on--you suffer terrible pain of course; but then your torture is bodily pain only (although no doubt you have plenty of that) until you die. But here I should imagine the most terrible part of the whole punishment is, not the bodily pain at all--but the certain knowledge that in an hour,--then in ten minutes, then in half a minute, then now--this very instant--your soul must quit your body and that you will no longer be a man-- and that this is certain, certain! That's the point--the certainty of it. Just that instant when you place your head on the block and hear the iron grate over your head--then--that quarter of a second is the most awful of all.
"This is not my own fantastical opinion--many people have thought the same; but I feel it so deeply that I'll tell you what I think. I believe that to execute a man for murder is to punish him immeasurably more dreadfully than is equivalent to his crime. A murder by sentence is far more dreadful than a murder committed by a criminal. The man who is attacked by robbers at night, in a dark wood, or anywhere, undoubtedly hopes and hopes that he may yet escape until the very moment of his death. There are plenty of instances of a man running away, or imploring for mercy--at all events hoping on in some degree--even after his throat was cut. But in the case of an execution, that last hope--having which it is so immeasurably less dreadful to die,--is taken away from the wretch and certainty substituted in its place! There is his sentence, and with it that terrible certainty that he cannot possibly escape death--which, I consider, must be the most dreadful anguish in the world. You may place a soldier before a cannon's mouth in battle, and fire upon him--and he will still hope. But read to that same soldier his death-sentence, and he will either go mad or burst into tears. Who dares to say that any man can suffer this without going mad? No, no! it is an abuse, a shame, it is unnecessary--why should such a thing exist? Doubtless there may be men who have been sentenced, who have suffered this mental anguish for a while and then have been reprieved; perhaps such men may have been able to relate their feelings afterwards. Our Lord Christ spoke of this anguish and dread. No! no! no! No man should be treated so, no man, no man!"
"This is not my own fantastical opinion--many people have thought the same; but I feel it so deeply that I'll tell you what I think. I believe that to execute a man for murder is to punish him immeasurably more dreadfully than is equivalent to his crime. A murder by sentence is far more dreadful than a murder committed by a criminal. The man who is attacked by robbers at night, in a dark wood, or anywhere, undoubtedly hopes and hopes that he may yet escape until the very moment of his death. There are plenty of instances of a man running away, or imploring for mercy--at all events hoping on in some degree--even after his throat was cut. But in the case of an execution, that last hope--having which it is so immeasurably less dreadful to die,--is taken away from the wretch and certainty substituted in its place! There is his sentence, and with it that terrible certainty that he cannot possibly escape death--which, I consider, must be the most dreadful anguish in the world. You may place a soldier before a cannon's mouth in battle, and fire upon him--and he will still hope. But read to that same soldier his death-sentence, and he will either go mad or burst into tears. Who dares to say that any man can suffer this without going mad? No, no! it is an abuse, a shame, it is unnecessary--why should such a thing exist? Doubtless there may be men who have been sentenced, who have suffered this mental anguish for a while and then have been reprieved; perhaps such men may have been able to relate their feelings afterwards. Our Lord Christ spoke of this anguish and dread. No! no! no! No man should be treated so, no man, no man!"
"He said that those five minutes seemed to him to be a most interminable period, an enormous wealth of time; he seemed to be living, in these minutes, so many lives that there was no need as yet to think of that last moment, so that he made several arrangements, dividing up the time into portions--one for saying farewell to his companions, two minutes for that; then a couple more for thinking over his own life and career and all about himself; and another minute for a last look around. He remembered having divided his time like this quite well. While saying good- bye to his friends he recollected asking one of them some very usual everyday question, and being much interested in the answer. Then having bade farewell, he embarked upon those two minutes which he had allotted to looking into himself; he knew beforehand what he was going to think about. He wished to put it to himself as quickly and clearly as possible, that here was he, a living, thinking man, and that in three minutes he would be nobody; or if somebody or something, then what and where? He thought he would decide this question once for all in these last three minutes. A little way off there stood a church, and its gilded spire glittered in the sun. He remembered staring stubbornly at this spire, and at the rays of light sparkling from it. He could not tear his eyes from these rays of light; he got the idea that these rays were his new nature, and that in three minutes he would become one of them, amalgamated somehow with them.
"The repugnance to what must ensue almost immediately, and the uncertainty, were dreadful, he said; but worst of all was the idea, 'What should I do if I were not to die now? What if I were to return to life again? What an eternity of days, and all mine! How I should grudge and count up every minute of it, so as to waste not a single instant!' He said that this thought weighed so upon him and became such a terrible burden upon his brain that he could not bear it, and wished they would shoot him quickly and have done with it."
. . .
"You probably wish to deduce, prince," said Alexandra, "that moments of time cannot be reckoned by money value, and that sometimes five minutes are worth priceless treasures. All this is very praiseworthy; but may I ask about this friend of yours, who told you the terrible experience of his life? He was reprieved, you say; in other words, they did restore to him that 'eternity of days.' What did he do with these riches of time? Did he keep careful account of his minutes?"
"Oh no, he didn't! I asked him myself. He said that he had not lived a bit as he had intended, and had wasted many, and many a minute."
"Very well, then there's an experiment, and the thing is proved; one cannot live and count each moment; say what you like, but one cannot."
"The repugnance to what must ensue almost immediately, and the uncertainty, were dreadful, he said; but worst of all was the idea, 'What should I do if I were not to die now? What if I were to return to life again? What an eternity of days, and all mine! How I should grudge and count up every minute of it, so as to waste not a single instant!' He said that this thought weighed so upon him and became such a terrible burden upon his brain that he could not bear it, and wished they would shoot him quickly and have done with it."
. . .
"You probably wish to deduce, prince," said Alexandra, "that moments of time cannot be reckoned by money value, and that sometimes five minutes are worth priceless treasures. All this is very praiseworthy; but may I ask about this friend of yours, who told you the terrible experience of his life? He was reprieved, you say; in other words, they did restore to him that 'eternity of days.' What did he do with these riches of time? Did he keep careful account of his minutes?"
"Oh no, he didn't! I asked him myself. He said that he had not lived a bit as he had intended, and had wasted many, and many a minute."
"Very well, then there's an experiment, and the thing is proved; one cannot live and count each moment; say what you like, but one cannot."