This address brings together some of the ideas of two great thinkers of our time; Terry Pratchett and Carl Sagan. It is from Terry Pratchett's satirical fantasy novel "Small Gods" that themes of religious oppression, false belief, and sincerity is addressed. It is from Carl Sagan's scientific humanism, espoused in "Pale Blue Dot: A Vision of the Human Future in Space" that a better sense of perspective, our relative importance, and a hope for our future, can be derived. On an abstract level, combining the two could initially be seen as a difficult or even foolish project. One is fantasy fiction, the other is hard science with a humanist angle. But of course, it is not abstract genres that are being discussed here, but rather the thematic content.
Terry Pratchett is an English author of fantasy fiction, most well known for the Discworld series which now spans over forty novels in its own right. In the 1990s he was the UK's best-selling author, and has sold over 85 million books in 37 languages. In 1998 he was awarded an OBE and in 2009 in he was knighted for his services to literature, which I am sure he took with comic humour to the pomp and ceremony. Perhaps more to his liking, he received the World Fantasy Award for Life Achievement in 2010. In late 2007 he announced that he was suffering from early onset Alzheimer's disease, and just a few days ago he had to pull out from his planned attendance as guest to the International Discworld Convention, stating "the Embuggerance is finally catching up with me".
Carl Sagan was an American astrophysicist and science communicator, a professor of astronomy at Cornell University, and the the author of over six hundred scientific papers and author, co-author, or editor of over twenty books. Whilst his scientific research contributed enormously to the discovering the surface temperatures of Venus, he is most famous as the co-author and presented of the television series Cosmos in the 1980s, broadcast to over 60 countries and seen by over 500 million people. Sagan was also an advocate of the Search for Extra-Terristerial Intelligence (SETI), a view expressed in his best-selling science fiction novel, Contact, published in 1985, and made into a film in 1997. Sagan died of pneumonia at the age of 62 on December 20, 1996.