Ursula Kroeber Le Guin was an American novelist. She worked mainly in the genres of fantasy and science fiction. She also authored children's books, short stories, poetry, and essays. Her writing was first published in the 1960s and often depicted futuristic or imaginary alternative worlds in politics, the natural environment, gender, religion, sexuality, and ethnography. In 2016, The New York Times described her as "America's greatest living science fiction writer", although she said that she would prefer to be known as an "American novelist".