Here, too, was the guide, the beacon, for such times as humanity might be in danger; here was the Guardian of Whom all humans knew — not an exterior … - Theodore Sturgeon

It means "Ask the next question." Ask the next question, and the one that follows that, and the one that follows that. It's the symbol of everything humanity has ever created, and is the reason it has been created. This guy is sitting in a cave and he says, "Why can't man fly?" Well, that's the question. The answer may not help him, but the question now has been asked. The next question is what? How? And so all through the ages, people have been trying to find out the answer to that question. We've found the answer, and we do fly. This is true of every accomplishment, whether it's technology or literature, poetry, political systems or anything else. That is it. Ask the next question. And the one after that.

Basically, fiction is people. You can't write fiction about ideas.

You have questions—urgent questions—I know that. And what makes them urgent is that you have in your mind the answers you want to hear. You will be more and more angry if you do not get those answers, but some can’t be given as you would hear them, because they would not be true.