A pair to frame the face I hang without a rope, Suspended in a place Where sound comes in to settle. Though I ring, I make no chime! Twin ornaments of vanity. What am I?

I’m the stone that holds the rest in place, Without me, the arch falls from grace. I’m the core on which ideas stand, The guiding principle that shapes a plan.

If this turns everything changes completely, Hungry? Reserve one for two even if you're with three.

If I tell you to go fly one, please don't take it literally, I just mean go away .

I have one eye but no head, and I only run when I am led. What am I?