Answer:
What is harder to catch the faster you run?
What asks but never answers?
I have no voice but I can teach you all there is to know. I have spines and hinges but I am not a door. Once I've told you all, I cannot tell you more. What am I?
I am an English word that is as long as I am valued.
I reach for the sky, but clutch to the ground. Sometimes I leave, but I am always around. What am I?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?