"Sturgeon's Law originally was 'Nothing is always absolutely so.' The other thing was known as 'Sturgeon's Revelation'"

"I repeat Sturgeon's Revelation, which was wrung out of me after twenty years of wearying defense of science fiction against attacks of people who used the worst examples of the field for ammunition, and whose conclusion was that ninety percent of sf is crud.

"The Revelation: Ninety percent of everything is crud.

"Corallary 1: The existence of immense quantities of trash in science fiction is admitted and if is regrettable; but it is no more unnatural than the existence of trash anywhere.

"Corallary 2: The best science fiction is as good as the best fiction in any field."