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  • Bill Watterson Quote - The surest sign that intelligent life exists elsewhere in the universe is that it has never tried to contact us.
  • Bill Watterson Quote - The surest sign that intelligent life exists elsewhere in the universe is that it has never tried to contact us.
  • Bill Watterson Quote - The surest sign that intelligent life exists elsewhere in the universe is that it has never tried to contact us.
  • Bill Watterson Quote - The surest sign that intelligent life exists elsewhere in the universe is that it has never tried to contact us.
  • Bill Watterson Quote - The surest sign that intelligent life exists elsewhere in the universe is that it has never tried to contact us.
  • Bill Watterson Quote - The surest sign that intelligent life exists elsewhere in the universe is that it has never tried to contact us.
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The surest sign that intelligent life exists elsewhere in the universe is that it has never tried to contact us.