 What could the moral of the story be?
But with the Procyon shuttle arriving yesterday, there was no telling what might turn up. For eighty years now, they’d been sending out the little ships that vanished at greater than the speed of light, equipped with every conceivable device to make them return automatically after taking pictures of wherever they arrived. He barely mentioned being married on the way or his dozen children, but filled most of the frame with glowing description and a plea for his father to join him there! He had no desire to spend ninety years cooped up with a bunch of callow young emigrants, even in one of the improved Exodus shuttles. And even if Exodus ever got the super-light drive working, there was no reason he should give up his work. The discovery that men could live practically forever had put an end to most family ties; sentiment wore thin in half a century—which wasn’t much time now, though it had once seemed long enough. Earth was becoming a backwater world; no real progress had been made in two centuries; the young men were sent out as soon as their first fifty years of education were finished, and the older men were too conservative for really new thinking. Pre-setting a course may take centuries, if we can ever master it. NO SANE man would risk a chance for near eternity against such a relatively short wait. Heroism had belonged to those who knew their days were numbered, anyhow. Dubbins was at his side almost at once, with a hand under his arm to guide him toward his suite.
 Mortality is crucial to enjoy life to the fullest.
 People will make sacrifices like the one Giles made at the end for the greater good.  Mortality is crucial to enjoy life to the fullest.  Given the chance, humans will chase after immortality.  Fear of aging is normal, but aging is unavoidable.