Ninety percent of SF [science fiction] is crud, but then, ninety percent of everything is crud.
![Ninety percent of SF [science fiction] is crud, but then, ninety percent of everything is crud.](http://cdn.quoteddaily.com/images/theodore-sturgeon/ninety-percent-of-sf-science-fiction-is-crud-but-then-ninety-percent-of-everything-is-crud.jpg)
Ninety percent of SF [science fiction] is crud, but then, ninety percent of everything is crud.