Smart, funny, often irreverent observations on 150 years of science fiction writing, from a literary master. "On SF" brings together, from a quarter century of writing, great essays by the celebrated writer Thomas Disch from such diverse places as "The Nation", the "New York Times Book Review", the "Atlantic Monthly", "Fantasy", and "Twilight Zone". Disch's perspectives on his genre are skeptical, novel, and often over-the-top. Some essays explore science fiction's roots - Poe, Bradbury, Clarke, Asimov - while others look at modern practitioners such as Stephen King, Philip Dick, Robert Heinlein, L. Ron Hubbard, and William Gibson. Disch entertains and provokes with essays on UFOs, Science Fiction as a Church, and Newt Gingrich's Futurist Brain Trust.