It starts the day a man's conceived:
Some cells die off and get relieved;
the molecules of which they're made
will interact and be remade;
electron flow is interlaced
and atoms find themselves replaced;
regardless how your plans are laid
your thoughts evolve, your memories fade;
the only thing that's there to stay
is coded in your DNA,
so in the deepest sense it's true:
You are your twin; your twin is you.