“When I look back, no matter how hard I try I can see clear break between one phase and another. It is a seamless flow - although flow is too strong a word. More a sort of busy stasis, a sort of running on the spot. Even that was too fast for me, however, I was always a little way behind, trotting in the rear of my own life. In Dublin I was still the boy growing up at Coolgrange, in America I was the callow young man of Dublin days, on the islands I became a kind of American. And nothing was enough. Everything was coming, was on the way, was about to be. Stuck in the past, I was always peering beyond the present towards a limitless future. Now, I suppose, the future may be said to have arrived.”

“When I was a boy in the midwest I used to go out and look at the stars at night and wonder about them.I guess every boy does that.When I wasn't looking at the stars, I was running in the my old or my brand-new tennis shoes, on my way to swing in a tree, swim in a lake, or delve in the town library to read about dinosaurs or time machines.I guess every boy has done that, too.This is a book about those stars and those tennis shoes. Mainly about the stars, beacuse that is the way I grew up, getting more and more involved with rockets and space as I moved toward my twelfth, thirteenth, and fourteenth years.Not that I have forgotten the tennis shoes and their powerful magic, as you will see in the last story here, which I have included not because it concerns the future, but because it gives you some sort of idea of the kind of boy I was when I was looking at the stars and thinking of the years ahead.Nor have I forgetten the dinosaurs that all boys love; they are here, too, along with a machine that travels back in time to step on a butterfly.This is a book then by a boy who grew up in a small illinois town and lived to see the space age arrive, as he hoped and dreamt it would.I dedicate these stories to all boys who wonder about the past, run swiftly in the present, and have high hopes for our future.The stars are yours, if you have the head, the hands, and the heart for them.”

“For myself, I always write about Dublin, because if I can get to the heart of Dublin I can get to the heart of all the cities of the world. In the particular is contained the universal.”

“I've always had a good memory a good head for facts although when something is behind you it changes when you try to capture it in words. The past is slippery that way. I know all about that. And even the present is hard to pin down. You think you know everything that's happening around you. But you can't always see clearly when you're standing right there in the picture.”

“I knew Denver was sincere when he told me that he would not want to trade places with me for even one day. His convictions became clear to me when I laid my key ring on the table between us at one of our earlier meetings for coffee.Denver smiled a bit and sidled up to a cautious question. 'I know it ain't none of my business, but does you own somethin' that each one of those keys fits?'I glanced at the keys; there were about ten of them. 'I suppose,' I replied, not really ever having thought about it.'Are you sure you own them, or does they own you?'That wisdom stuck to my brain like duct tape. The more I thought about it, the more I became convinced we'd enjoy life a whole lot more if we owned a whole lot less.”

“When I’m running, there’s always this split second when the pain is ripping through me and I can hardly breathe and all I see is color and blur—and in that split second, right as the pain crests, and becomes too much, and there’s a whiteness going through me, I see something to my left, a flicker of color […]—and I know then, too, that if I only turn my head he’ll be there, laughing, watching me, and holding out his arms.I don’t ever turn my head to look, of course. But one day I will. One day I will, and he’ll be back, and everything will be okay.And until then: I run.”