old smart dudes

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Across
  1. 3. car guy
  2. 5. we revolve around the sun
  3. 7. BRO INVENTED GRAVITY!
  4. 8. monalisa
Down
  1. 1. king of plays
  2. 2. poet, novelist, playwrite, and politician.
  3. 4. number spirals
  4. 6. e=mc2