“It is not easy to see how the more extreme forms of nationalism can long survive when men have seen the Earth in its true perspective as a single small globe against the stars.”
“As our own species is in the process of proving, one cannot have superior science and inferior morals. The combination is unstable and self-destroying.”
“Perhaps, as some wit remarked, the best proof that there is Intelligent Life in Outer Space is the fact it hasn't come here. Well, it can't hide forever -- one day we will overhear it.”
“[The competition at the NASA Ames Research Center invited teams to take their best shot at creating the world's first] space elevator ... The Fountains of Paradise.”
“If an elderly but distinguished scientist says that something is possible he is almost certainly right, but if he says that it is impossible he is very probably wrong.”