Their flight was not less exhilarating for being explainable.

“So much American science fiction is parochial -- not as true now as it was year…”

“In the intricate and mutable space-time geometry at the black hole, in-falling …”

“A fanatic is a man who, when he's lost sight of his purpose, redoubles his effo…”

“Two lives met across death and centuries. To ask what it meant is meaningless. …”