Some People Are Heroes. And Some People

A Thaum Is The Basic Unit Of Magical Strength. It Has Been Universally Established As The Amount Of Magic Needed To Create One Small White Pigeon Or Three Normal-sized Billiard Balls.

This, Milord, Is My Family's Axe. We Have Owned It For Almost Nine Hundred Years, See. Of Course, Sometimes It Needed A New Blade. And Sometimes It Has Required A New Handle, New Designs On The Metalwork, A Little Refreshing Of The Ornamentation . . . But Is This Not The Nine Hundred-year-old Axe Of My Family? And Because It Has Changed Gently Over Time, It Is Still A Pretty Good Axe, Y'know. Pretty Good.

My Idea Of A Good Novel Was One You Made Enough Money Out Of To Buy A Greenhouse.

Ninety Percent Of Most Magic Merely Consists Of Knowing One Extra Fact.

Oh, My Dear Vimes, History Changes All The Time. It Is Constantly Being Re-examined And Re-evaluated, Otherwise How Would We Be Able To Keep Historians Occupied? We Can't Possibly Allow People With Their Sort Of Minds To Walk Around With Time On Their Hands.