Sir Terry Pratchett OBE (1948-2015) was one of the most beloved and bestselling authors in the world, known primarily for his satirical fantasy Discworld series. Born in Beaconsfield, Buckinghamshire, England, Pratchett published his first short story at age thirteen and went on to write over 70 books, selling more than 85 million copies worldwide.

The Discworld series, spanning 41 novels, is set on a flat world balanced on the backs of four elephants standing on a giant turtle swimming through space. Through this absurd premise, Pratchett delivered incisive commentary on human nature, politics, religion, and society, all wrapped in brilliant wit and wordplay.

Pratchett was known for his prolific output, distinctive writing style mixing humor with profound observations, and his iconic black fedora. He was awarded a knighthood in 2009 for services to literature. After being diagnosed with early-onset Alzheimer's disease in 2007, he became an advocate for Alzheimer's research and the right-to-die movement. He continued writing until his death in 2015, leaving behind an unparalleled legacy in fantasy literature.

His work has influenced countless authors and spawned adaptations including the BBC's "Good Omens" (co-written with Neil Gaiman), "The Watch," and numerous stage and radio productions.