Cliff Hays - Books & Music - Science Fiction Short Stories, Philosophy, Existentialism, Mathematics, Symbolic Logic, Science, Non Fiction Books, Philosophy of Science. Books, eBooks, Writing Samples, Music, MP3s, Discography, Lyrics, and Blog of author and musician Cliff Hays. Science Fiction Short Stories, Non Fiction Books, Existentialism, Philosophy of Science. agnostic, existentialism, science fiction, non fiction books, existentialist, symbolic logic, philosophy of science, science fiction short stories, sci fi short stories, song lyrics, indie music, indie rock, lo fi, indie folk