“Look, Chief—is it really necessary to kill everybody here? I don’t relish it.” “Don’t get chicken, son,” admonished Ardmore with an edge in his voic… - Robert A. Heinlein

I glanced at the ring on my finger. The Snake That Eats Its Own Tail, Forever and Ever … I know where I came from — but where did all you zombies come from?

His older self had taught his younger self a language which the older self knew because the younger self, after being taught, grew up to be the older self and was, therefore, capable of teaching.

This is the great day. This is the greatest event in all the history of the human race, up to this time. That is — today is New Year's Day of the Year One. If we don't change the calendar, historians will do so. The human race — this is our change, our puberty rite, bar mitzvah, confirmation, from the change of our infancy into adulthood for the human race. And we're going to go on out, not only to the Moon, to the stars; we're going to spread. I don't know that the United States is going to do it; I hope so. I have — I'm an American myself; I want it to be done by us. But in any case, the human race is going to do it, it's utterly inevitable: we're going to spread through the entire universe.