H. Rap Brown

The first responsibility of the Muslim is as teacher. That is his job, to teach. His first school, his first classroom is within the household. His first student is himself. He masters himself and then he begins to convey the knowledge that he has acquired to the family. The people who are closest to him.

The historical novelist has to consider what has actually happened, while the SF writer is dealing in possibilities, but they are both in the business of imagining a world unlike our own and yet connected to it.