My Father's Hands

My father has old hands.  I don't know why this detail strikes me, but it does.  They remind me of his father's hands, my grandfather's.  I don't know why it is, but somehow when men get old their hands flatten out. They lose the thick roundness and become flat.  Dad's hands this year have become flat.  They are still strong, suprisingly so, but now they are old.  I don't know why of all things this makes me sad.