“If nothing else, we simply get used to being alive.”

“I don't think anyone ever gets over anything in life; they merely get used to it.”

“Rick feels almost the way he used to halfway through his third drink, his favorite moment, the way he wishes all moments in life could feel: heightened with the sense that anything could happen at any moment--that being alive is important, because just when you least expect it, you might receive exactly what you least expect.”

“Human beings are the only animal that thinks they change who they are simply by moving to a different place. Birds migrate, but it’s not quite the same thing.”

“I think we're simply going to run out of Nature before we have a chance to destroy it.”

“And the reason Luke is thinking about time and free will is because he believes that money is the closest human beings have ever come to crystallizing time and free will into a compact physical form. Cash. Cash is a time crystal. Cash allows you to multiply your will, and it allows you to speed up time. Cash is what defines us as a species. Nothing else in the universe has money.”

“Now Karen wants a pill that will make the whole twenty-first century disappear - that will make this unavoidable future vanish. Dr Yamato said that earth was not built for six billion people, all running around and being passionate about being alive. Earth was built for about two million people foraging for roots and grubs.”