Answer:
People see through me, but none pass through without killing me. I can be anywhere, and can be seen double or single. What am I?
I have all the knowledge you have. But I am so small that I can fit into your hands. What am I?
I twist and turn and leave a loop. What am I?
I have a name written on me, but it isnβt my name. Men plant me, but I never grow. They look at me and see their future, rotting in my bloom.
I row quickly with four oars, but never come out from under my own roof. What am I?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.