Any civilization that doesn't develop space travel dies.

That kind of natural understanding doesn't develop naturally

— Kenny Cunningham

“[L]uxury always comes at someone else’s expense. One of the many advantages of civilization is that one doesn’t generally have to see that, if…

— Anne Leckie

“And you don’t like my saying that, but here’s the truth: luxury always comes at someone else’s expense. One of the many advantages of…

— Ann Leckie

The darkest secret of this country, I am afraid, is that too many of its citizens imagine that they belong to a much higher…

— Kurt Vonnegut

“Luxury always comes at someone else’s expense. One of the many advantages of civilization is that one doesn’t generally have to see that, if…

— Ann Leckie

“The darkest secret of this country, I am afraid, is that too many of its citizens imagine that they belong to a much higher…

— Kurt Vonnegut

“civilization doesn’t separate us from nature, Ted. Civilization protects us from nature. Because”

— Michael Crichton

“There is no such thing as a world without combat, no civilization which doesn't start off by laying down the rules for relations between…

— Henning Mankell

“Civilization is but a thin veneer stretched across the passions of the human heart. And civilization doesn't just happen; we have to make it…

— Bill Moyers

“Whatever the reason we first mustered the _Apollo_ program, however mired it was in Cold War nationalism and the instruments of death, the inescapable…

— Carl Sagan

“Reach for the stars all you want, but anchor your soul in the soil.”

— Abhijit Naskar

In the long run, the aggressive civilizations destroy themselves, almost always. It's their nature. They can't help it.

— Carl Sagan

For all I know we may be visited by a different extraterrestrial civilization every second Tuesday, but there's no support for this appealing idea.…

— Carl Sagan

I think the health of our civilization, the depth of our awareness about the underpinnings of our culture, and our concern for the future,…

— Carl Sagan

“Books permit us to voyage through time, to tap the wisdom of our ancestors. The library connects us with the insight and knowledge, painfully…

— Carl Sagan