"The mule always appears to me a most surprising animal.
That a hybrid should possess more reason, memory, obstinacy,
powers of muscular endurance, and length
of life, than either of its parents,
seems to indicate that
art has here outdone nature."
--- Charles Darwin
"The mule was old, raw-bony and mean.
He was so raw-bony that
he creaked as he ambled about
the village street with his meanness
shining out through every chink and
cranny in his rattling anatomy."
--- Zora Neale Hurston
sugar mule magazine