“Would I be happy if I discovered that I could go to heaven forever? And the answer is no. Consider this argument. Think about what is forever. And think about the fact that the human mind, the entire human being, is built to last a certain period of time. Our programmed hormonal systems, the way we learn, the way we settle upon beliefs, and the way we love are all temporary. Because we go through a life's cycle. Now, if we were to be plucked out at the age of 12 or 56 or whenever, and taken up and told, "Now you will continue your existence as you are. We're not going to blot out your memories. We're not going to diminish your desires." You will exist in a state of bliss - whatever that is - forever. [...] Now think, a trillion times a trillion years. Enough time for universes like this one to be born, explode, form countless star systems and planets, then fade away to entropy. You will sit there watching this happen millions and millions of times and that will be just the beginning of the eternity that you've been consigned to bliss in this existence.”

“Captain Smek himself appeared on television for an official speech to humankind. [...] 'Noble Savages of Earth,' he said. 'Long time we have tried to live together in peace.' (It had been five months.) 'Long time have the Boov suffered under the hostileness and intolerableness of you people. With sad hearts I now concede that Boov and humans will never to exist as one.' I remember being really excited at this point. Could I possibly be hearing right? Were the Boov about to leave? I was so stupid.'And so now I generously grant you Human Preserves - gifts of land that will be for humans forever, never to be taken away again, now.' [...] So that's when we Americans were given Florida. One state for three hundred million people. There were going to be some serious lines for the bathrooms.”

“But I am designed to last forever," said the expendable, "if not interfered with.""Isn't that nice? Expendable yet eternal. You'll be able to go back and observe any part of human history that you wish. Watch the pyramids being unbuilt. See the ice ages go and come in reverse. Watch the de-extinction of the dinosaurs as a meteor leaps out of the Gulf of Mexico.""I will have no useful task. I will not be able to help the human race in any way. My existence will have no meaning after you are dead.""Now you know how humans feel all the time.”

“There is no such thing as death. Life existed before we were born and will continue to exist after we leave this world. Same with love, it existed before and will go on forever.”

“There will come a time when all of us are dead. All of us. There will come a time when there are no human beings remaining to remember that anyone ever existed or that our species ever did anything. There will be no one left to remember Aristotle or Cleopatra, let alone you. Everything that we did and built and wrote and thought and discovered will be forgotten and all of this will have been for naught. Maybe that time is coming soon and maybe it is millions of years away, but even if we survive the collapse of our sun, we will not survive forever. There was time before organisms experienced consciousness, and there will be time after. And if the inevitability of human oblivion worries you, I encourage you to ignore it. God knows that’s what everyone else does.”

“if people lived forever - if they never got any older - if they could just go on living in this world, never dying, always healthy - do you think they'd bother to think hard about things the way we're doing now? i mean, we thing about just about everything, more or less - philosophy, psychology, logic. religion. literature. i kinda think, if there were no such thing as death, that complicated thoughts and ideas like that would never come into the world......people have to think seriously about what it means for them to be alive here and now because they know they're going to die sometime. right? who would think about what it means to be alive if they were just going to go on living forever? why would they have to bother? or even if they should bother, they'd probably just figure, 'oh, well, i've got plenty of time for that. i'll think about it later.' but we can't wait till later. we've got to think about it right this second...nobody knows whats going to happen. so we need death to make us evolve...death is this huge, bright thing, and the bigger and brighter it is, the more we have to drive ourselves crazy thinking about things.”