He guards himself against believing things that aren't true and knows how to test the truth content of ideas!
Merlin is reported to have had the same powers.
In this way the truth of the universe he winnows out from the chaff.
And he recommends Carl Sagan who is responsible for crippling cosmology with burning snowballs and green house gasing the brains of millions.
I do not believe in visitations from extraterrestrials but I do believe we are ruled by aliens. The world is a lot more complex than I had imagined. The lords of this world remember the past, the lords of this world need shadows, the lords of this world are time bandits. Your time and mine. Logically this is correct, conservation of power demands it be so. What makes us believe cell phones were only just invented for the first time or batteries and plasma torches are completely new to this world? Education does because education is designed to certainly keep us ignorant of the past. There is nothing new under the sun.