Answer:
When you stop and look, you can always see me. If you try to touch, you cannot feel me. I cannot move, but as you near me, I will move away from you. What am I?
Without a bridle or a saddle across a thing I ride a-straddle. And those I ride by help of me though almost blind are made to see.
What gets sharper the more you use it?
I had a bright start, but I couldn't take the pressure. I consume everything, yet I don't eat anything. What am I?
you cannot keep me until you have given me
The answer I give is yes, but what I mean is no. What was the question?