No, I wouldn't be too much surprised if an advanced civilization existed here on this world.

It was hard to believe that entire civilizations had existed without coffee.

Only a few days from what little civilization existed here and already they were fugitives.

Though, of course, I accept your word that this civilization does exist.

Whether the civilization which set it up still exists, we do not know.

Your civilization exists right next door to the most powerful force imaginable.

We do not know if civilization will still exist in the age in which you find yourself.

How many animals do you think have died so that human civilisation can exist and expand?

Intelligent civilizations exist, but we see no evidence, meaning is small.

But whatever civilization exists on this planet is in there.