They’ve heard about space but they still don’t believe in it. They haven’t been out here to see for themselves that there isn’t any giant elephant under the earth, holding it up, and a giant tortoise holding up the elephant. If I say “planet” and “spaceship” to them, they still think “horoscope” and “flying saucer”.

After all, to the truly skeptical mind, diabolic forces are just as reasonable building blocks for the cosmos as mindless electrons. No possibility, however seemingly fantastic, should revolt the truly skeptical mind. It all depends on the evidence. The evidence decides everything.

He had the dim realization that the universe, like a huge sleepy animal, knew what he was trying to do and was trying to thwart him. This feeling of opposition made him determined to outmaneuver the universe—not the first guy to yield to such a temptation, of course.