The Debt

This is the debt I pay  
  Just for one riotous day,
  Years of regret and grief,
  Sorrow without relief.
  Pay it I will to the end -
  Until the grave, my friend,
  Gives me a true release -
  Gives me the clasp of peace.
  Slight was the thing I bought,
 Small was the debt I thought,
 Poor was the loan at best -
 God! but the interest!