The surest sign that intelligent life exists Posted on October 29, 2011September 16, 2013 by admin “The surest sign that intelligent life exists elsewhere in the universe is that it has never tried to contact us.” — Bill Watterson Author: Bill Watterson Category: intelligence Tags: intelligence, Bill Watterson Spread the love Related posts: Remember to be as smart as you There are three kinds of intelligence: one Do you not see how necessary a Neither a lofty degree of intelligence nor