Neil deGrasse Tyson
Perhaps we've never been visited by aliens because they have looked upon Earth and decided there's no sign of intelligent life.
More quotes and aphorisms
Freedom lies in being bold...Since Auschwitz, we know what man is capable of...I know that war and mayhem run in our blood...By the time you're eighty years old you've learned...To me, you are still nothing more than a little boy...And have you thought about what happens...
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