“Two possibilities exist: either we are alone in the Universe or we are not. Both are equally terrifying.”

“They had not yet attained the stupefying boredom of omnipotence; their experiments did not always succeed.”

“After their encounter on the approach to Jupiter, there would aways be a secret bond between them---not of love, but of tenderness, which is often more enduring.”

“In this single galaxy of ours there are eighty-seven thousand million suns. [...] In challenging it, you would be like ants attempting to label and classify all the grains of sand in all the deserts of the world. [...] It is a bitter thought, but you must face it. The planets you may one day possess...”