Poul William Anderson was an american author of science fiction who begin his career during the Golden Age of science fiction.
Pseudonyms: Winston P. Sanders; Michael Karageorge
Earned a degree in physics from the University of Minnesota in 1948. Used his knowledge of Scandinavia and science extensively in his career. Has contributed a huge body of highly literate SF and Fantasy to the field. Father-in-law of writer Greg Bear.
The trouble with having an open mind, of course, is that people will insist on coming along and trying to put things in it.