Sourcery
(Discworld Novel 5)
📘 About This Book
Discover the gloriously inventive and funny fantasy novel from bestselling author Terry Pratchett, the third book in the Wizards series, part of the Discworld novels. 'One of our greatest fantasists, and beyond a doubt the funniest' George R.R. Martin 'May well be considered his masterpiece . . . Humour such as his is an endangered species' The Times 'It's vital to remember who you really are . . . it isn't a good idea to rely on other people or things to do it for you, you see. They always get it wrong.' An eighth son of an eighth son is born, a wizard squared, a source of magic. A sourcerer. Unseen University, the Discworld's most magical establishment, has finally got its wish: the emergence of a wizard more powerful than ever before. You'd think they would have been a little more careful what they wished for . . . As the sourcerer takes over the University and sets his sights on the rest of the world, only one wizard manages to escape his influence. Unfortunately for everyone, it's Rincewind. Once again the cowardly wizard must embark on a quest: to deliver a precious artefact - the very embodiment of magic itself - halfway across the Disc to safety. If he doesn't make it, the death of all wizardry is at hand. And the end of the world, depending on who you listen to. Sourcery is the third book in the Wizards series, but you can read the Discworld novels in any order. Praise for the Discworld series: '[Pratchett’s] spectacular inventiveness makes the Discworld series one of the perennial joys of modern fiction' Mail on Sunday ‘Pratchett is a master storyteller’ Guardian 'One of those rare writers who appeals to everyone’ Daily Express ‘One of the most consistently funny writers around’ Ben Aaronovitch ‘Masterful and brilliant’ Fantasy & Science Fiction ‘Pratchett uses his other world to hold up a distorting mirror to our own... he is a satirist of enormous talent ... incredibly funny ... compulsively readable' The Times ‘The best humorous English author since P.G. Wodehouse' The Sunday Telegraph ‘Nothing short of magical’ Chicago Tribune 'Consistently funny, consistently clever and consistently surprising in its twists and turns' SFX ‘[Discworld is] compulsively readable, fantastically inventive, surprisingly serious exploration in story form of just about any aspect of our world...There's never been anything quite like it’ Evening Standard
📖 Summary
Sourcery, the third installment in the Wizards subseries of Terry Pratchett's acclaimed Discworld collection, delivers a gloriously inventive and uproarious fantasy narrative that explores the dangerous consequences of unlimited magical power. Published in 2009 across its concise 251 pages, the novel introduces a monumental disruption to the usually predictable and inept academic ecosystem of the Unseen University, the Discworld's premier establishment for magical learning. The core premise revolves around the forbidden birth of an eighth son of an eighth son. According to Discworld lore, when a wizard fathers a son, that child becomes a wizard, but when a wizard fathers an eighth son, the resulting offspring is something altogether different, vastly more potent, and immensely perilous. This phenomenon creates a wizard squared, a primal source of pure magic known as a sourcerer. For generations, the very concept of a sourcerer has been whispered about with dread by magical scholars, representing an apocalyptic force capable of reshaping reality itself. Yet, the faculty and leadership of Unseen University have long harbored a secret, arrogant desire to see such immense power manifested, believing they could somehow control or harness it for their own prestige. When a true sourcerer finally emerges, they quickly discover the horrifying truth of the old adage that one should be careful what they wish for. The new arrival possesses a level of raw, unbridled power that threatens to completely upend the delicate balance of the Discworld, turning the academic halls upside down and sparking a cascade of absurd, catastrophic events. As the reality-bending magic begins to warp the world around them, the narrative explores deeper themes about identity, autonomy, and the dangers of relying on external forces to define who you are. Pratchett's signature wit shines brightly as he navigates the chaos, utilizing his trademark satirical lens to poke fun at institutional hubris, academic politics, and high fantasy tropes. The characters, familiar and new alike, must confront a universe where the rules of magic are rewritten on a whim, forcing them to find inner resilience in the face of overwhelming odds. Through brilliant comedic timing and sharp social commentary, the story captures the chaotic charm that has made Pratchett one of the greatest fantasists in literary history. Readers are treated to an imaginative romp that balances laugh-out-loud humor with surprisingly poignant philosophical observations, making it a standout chapter in the expansive Discworld canon.
🎯 Key Lessons
⚖️ Pros & Cons
✅ Pros
Gloriously inventive and imaginative fantasy worldbuilding
Consistently funny with sharp, witty satire
Memorable characters navigating absurd and entertaining situations
Presents deeper philosophical themes beneath the comedy
⚠️ Cons
The chaotic plot can occasionally feel overwhelming
May require some familiarity with earlier Discworld books to fully appreciate
✍️ About the Author
Terry Pratchett (1948-2015) was an English author celebrated for the 'Discworld' series, a satirical fantasy saga spanning over 40 novels known for its wit, social commentary, and inventive world-building.
View all books →❓ FAQ
What is a sourcerer in the novel? +
A sourcerer is an eighth son of an eighth son, representing a wizard squared and a primal, dangerous source of pure magic.
Which series does Sourcery belong to? +
It is the third book in the Wizards series and part of the broader Discworld collection by Terry Pratchett.
How many pages long is this book? +
The book spans 251 pages of inventive fantasy fiction.
What setting is featured prominently in the story? +
The story heavily features Unseen University, the Discworld's most famous and magical academic establishment.
When was this edition published? +
This edition of the novel was published in 2009.












