“Saving the human race is a frantic one. Or a tedious one. It all depends on what stage of the process you're taking part in.”

“As a species, we have evolved to survive. And the way we do it is by straining and straining and, at last, every few generaitons, giving brith to genius. The one who invents the wheel. And light. And flight. The one who builds a city, a nation, an empire...I'll put it bluntly. Human beings are free excpet when humanity needs them. Maybe humanity needs you. To do something. Maybe humanity needs me - to find out what you're good for.”

“Happiness can depend as easily on useless things as on useful ones.”

“Will we be extinguished? What difference does it make then, the ones of us who had plans, what does it matter the work we’ve done? The children we’ve raised? He looked pointedly at Olhado. “What will it matter then, that you have such a big happy family, if you’re all erased in one instant by that … bomb? “Not one moment of my life with my family has been wasted,” said Olhado quietly. “But the point of it is to go on, isn’t it? To connect with the future?” “That’s one part, yes,” said Olhado. “But part of the purpose of it is now, is the moment. And part of it is the web of connections. Links from soul to soul. If the purpose of life was just to continue into the future, then none of it would have meaning, because it would be all anticipation and preparation. There’s fruition, Grego. There’s the happiness we’ve already had. The happiness of each moment. The end of our lives, even if there’s no forward continuation, no progeny at all, the end of our lives doesn’t erase the beginning.”

“...it seemed a part of her life, to step from the ancient to the modern, back and forth. She felt rather sorry for those who knew only one and not the other. It was better, she thought, to be able to select from the whole menu of human achievements than to be bound within one narrow range.”

“This is how humans are: We question all our beliefs, except for the ones that we really believe in, and those we never think to question.”

“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.”