All of us have read thrilling stories in which the hero had only a limited and specified time to live. Sometimes it was as long as a year, sometimes as short as 24 hours. But always we were interested in discovering just how the doomed hero chose to spend his last days or his last hours. I speak, of course, of free men who have a choice, not condemned criminals whose sphere of activities is strictly delimited. Such stories set us thinking, wondering what we should do under similar circumstances. What events, what experiences, what associations should we crowd into those last hours as mortal beings, what regrets? Sometimes I have thought it would be an excellent role to live each day as if we should die tomorrow. Such an attitude would emphasize sharply the values of life. We should live each day with gentleness, vigor and a keenness of appreciation which are often lost when time stretches before us in the constant panorama of more days and months and years to come. There are those, of course, who would adopt the Epicurean motto of 'Eat, drink, and be merry'. But most people would be chastened by the certainty of impending death. In stories the doomed hero is usually saved at the last minute by some stroke of fortune, but almost always his sense of values is changed. He becomes more appreciative of the meaning of life and its permanent spiritual values. It has often been noted that those who live, or have lived, in the shadow of death bring a mellow sweetness to everything they do. Most of us, however, take life for granted. We know that one day we must die, but usually we picture that day as far in the future. When we are in buoyant health, death is all but unimaginable. We seldom think of it. The days stretch out in an endless vista. So we go about our petty tasks, hardly aware of our listless attitude toward life. Why is the author talking about those examples in paragraph 1?