“Science fiction is very well suited to asking philosophical questions; questions about the nature of reality, what it means to be human, how do we know the things that we think we know.”

“That's really what SF is all about, you know: the big reality that pervades the real world we live in: the reality of change. Science fiction is the very literature of change. In fact, it is the only such literature we have.”

“A philosopher once asked, "Are we human because we gaze at the stars, or do we gaze at them because we are human?" Pointless, really..."Do the stars gaze back?" Now, that's a question.”

“In the final analysis, the questions of why bad things happen to good people transmutes itself into some very different questions, no longer asking why something happened, but asking how we will respond, what we intend to do now that it happened.”

“Don’t ask me those questions! Don’t ask me what life means or how we know reality or why we have to suffer so much. Don’t talk about how nothing feels real, how everything is coated with gelatin and shining like oil in the sun. I don’t want to hear about the tiger in the corner or the Angel of Death or the phone calls from John the Baptist.”

“Science tells us what we can know, but what we can know is little, and if we forget how much we cannot know we become insensitive to many things of very great importance.”