My dear,

We, as humans, are distrustful, quick to judge, violent, sex-driven, and callous.

If aliens are just like us, then they should be feared.

If we, as a species, discovered another habitable planet, and one of our astronauts came off the ship and voicing for the whole said, “We come in peace,” would you be able to keep a straight face?

Falsely yours,
Neil deGrasse Tyson