Answer:
I carry you down a gentle stream.
Adored by few, feared and hated by many. Mistress of the entire universal reason, master in the art of numbers. Some may have solved many of my mysteries, but there are still many of them to find. What am I?
You can see me in water, but I never get wet. What am I?
What can you catch but not throw?
I am a portal to another world which you cannot enter. Only you can see me but I can't see you.
Runs over fields and woods all day. Under the bed at night sits not alone, With long tongue hanging out, Resting at your feet until we go for a walk