Science fiction author Philip José Farmer has died. He was 91. The New York Times observed that he was a writer who "shocked readers in the 1950s by depicting sex with aliens and who went on to challenge conventional pieties of the genre in caustic fables set on bizarre worlds of his own devising . . . Farmer's distinctive blend of intellectual daring and pulp-fiction prose found a worldwide audience. His more than 75 books have been translated into 22 languages and published in more than 40 countries."
"Imagination," he once said, "is like a muscle. I found out that the more I wrote, the bigger it got."