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
Great thoughts speak only to the thoughtful mind...The body of a beautiful woman is not made for love...People often grudge others...You make a living by what you get...If you go anywhere, even paradise, you will miss...Memory is the treasure house of the mind...
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