Answer:
I have all the knowledge you have. But I am so small that I can fit into your hands. What am I?
What can travel around the world while staying in a corner?
The faster you run, the harder it is to catch me. What am I?
What is it that after you take away the whole some still remains?
Who is the most foreign visitor you could imagine?
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.