For all my misfortunes, I probably cried
a puddle or bucket at most in my life.
How much of that sadness would give us a river?

Equations could certainly settle the question,
but is this an answer math should provide?
The volume of sorrow surpasses all depth.

I sense someone out there has already tried
and estimates twenty-one trillion lamenters
weeping at least for three million years.

I'd put it more simply: too many tears.