Answer:
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?
What is it that makes tears without sorrow. And takes its journey to heaven?
I must be broken before you can use me. What am I?
I mean goodbye for South Americans.
I have a mouth on my head and eat everything.
The answer I give is yes, but what I mean is no. What was the question?