Answer:
If you break me, I do not stop working. If you touch me, I may be snared. If you lose me, nothing will matter.
I heard of a wonder, of words moth-eaten. That is a strange thing, I thought, weird. That a man's song be swallowed by a worm. His blinded sentences, his bedside stand-by rustled in the night - and the robber-guest. Not one wit the wiser. For the words he had mumbled.
What force and strength cannot get through. I, with a gentle touch, can do. Many in the street would stand. Were I not a friend at hand.
What is made of wood but can't be sawed?
Though blind as well, can lead the blind well.
People take me on walks and I run and have fun. What am I?