And here is another Lesser poem to enjoy -- this one found along with lots more math-poetry in the Bridges 2016 Poetry Anthology, edited by Sarah Glaz (Tessellations Publishing, 2016).
Dogs Know by Larry Lesser
A dog-eared College Mathematics Journal lies
open to a paper called
"Do dogs know calculus?"
where the author's canine travels land
and water to reach most quickly
the ball thrown
into Lake Michigan.