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
The woods are lovely, dark and deep...The reason that a good citizen does not use...Decisions! And a general, a commander in chief...I come from a family that was very strong...There is no more lovely, friendly and charming...I don't know whether I have ideas all the time...
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