<Tr> <Td_colspan="2"> List of Star Trek: The Animated Series episodes </Td> </Tr> <P> "How Sharper Than a Serpent's Tooth" is the fifth episode of the second season of the American animated science fiction television series Star Trek: The Animated Series, the 21st episode overall . It first aired in the NBC Saturday morning lineup on October 5, 1974, and was written by Russell Bates and David Wise . </P> <P> The title comes from Act 1, Scene 4 of William Shakespeare's King Lear: "How sharper than a serpent's tooth it is to have a thankless child!" </P> <P> In this episode, the Enterprise must contend with alien entity that demands it be worshiped as a god . </P>

How sharper than a serpent's tooth it is to have a thankless child