Fantasy involves that which general opinion regards as impossible; science fiction involves that which general opinion regards as possible under the right… — Daryl Gregory Copy Share Image
Those human groups that entertain a subjective belief in their common descent because of similarities of physical type or of customs or… — Max Weber Copy Share Image
What is possible and what is not possible is not objectively known but is, rather, a subjective belief on the part of… — Philip K. Dick Copy Share Image
