Foundation and Earth (Foundation, #5)

by Isaac Asimov

“Then, when that time comes, we’ll face the problem. Meanwhile, let’s not manufacture problems out of air.”

Superstition always directs action in the absence of knowledge.

accept only what I am forced to accept by reasonably reliable evidence, and keep that acceptance tentative pending the arrival of further evidence. That doesn’t make us popular.”

“if you wish to call the truth impossible, that is your privilege, but it will get you nowhere.”