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
God created the heavens and the earth...Those who do not need to provide or have not built...Number 4 should have been number 1...We don't come to Canada for our health...If you have only one smile...Print is the sharpest and the strongest weapon...
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