I knew our plan was doomed   Right from the start   The human bodt's made of   more than just a heart,      And though it seemed we'd be   Together for eternity,   That's a long long away   From how it seems to be to me      It isn't right   That we should fight   About the way we fit together   Just another complication   That is standing in our way   And you know   I love you so   And even though we'll make a monster   It's a beautiful disaster   That's too terrible to simply throw away      Our arteries are red   And our veins remain blue   But even so our damaged   Blood trickles through   It's true   That all our relatives dies   From the blood   That trickled 'round them inside   And so far we've lived our lives   Thinking everything was fine,   Not thinking of the trouble   Borne inside us at the time,      And now we've come   To find the sum   Is greater than the parts that make it   This hereditary sorrow   That's kept quiet through the years   All the grief   And the relief   Our parents felt when we were healthy   Newborn babies we don't get   Because genetics is a science   Made of tears