Hogfather - Jump

Death nodded his head toward the boar. Binky was keeping level with it now, barely a few feet away.

Realization dawned.

“I can’t ride that!” said Susan.

WHY NOT? YOU HAVE HAD AN EDUCATION.

“Enough to know that pigs don’t let people ride them!”

MERE ACCUMULATION OF OBSERVATIONAL EVIDENCE IS NOT PROOF.

Susan glanced ahead. The snow field had a cut-off look.

YOU MUST, said her grandfather’s voice in her head. WHEN HE REACHES THE EDGE THERE HE WILL STAND AT BAY. HE MUST NOT. UNDERSTAND? THESE ARE NOT REAL DOGS. IF THEY CATCH HIM HE WON’T JUST DIE, HE WILL…NEVER BE…

Susan leapt. For a moment she floated through the air, dress streaming behind her, arms outstretched…

Landing on the animal’s back was like hitting a very, very firm chair. It stumbled for a moment and then righted itself.

***

Hogfather - p335-336