The trouble with science fiction is that you can write about everything: time, space, all the future, all the past, all of the universe, any kind of creature imaginable. That's too big. It provides no focus for the artist. An artist needs, in order to function, some narrowing of focus. Usually, in the history of art, the narrower the focus in which the artist is forced to work, the greater the art.
— Philip J. Klass
The most wonderful Philip J. Klass quotes that are life-changing and eye-opening