Moist stared disconsolately at a letter from a Ms Estressa Partleigh of the Campaign for Equal Heights. The Post Office, apparently, was not employing enough dwarfs. Moist had pointed out, very reasonably, he thought, that one in three of the staff were dwarfs. She had replied that this was not the point. The point was that since dwarfs were on average two-thirds the height of humans, the Post Office, as a responsible authority, should employ one and a half dwarfs for every human employed. The Post Office must reach out to the dwarf community, said Ms Partleigh.

Moist picked up the letter between thumb and forefinger and dropped it on the floor. It's reach down, Ms Partleigh, reach down.

There had also been something about core values. He sighed. It had come to this. He was a responsible authority, and people could the terms like 'core values' at him with impunity.

Nevertheless, Moist was prepared to believe that there were people who found a quiet contentment in contemplating columns of figures. Their number did not include him.

It had been weeks since he'd last designed a stamp! And much longer since he'd had that tingle, that buzz, that feeling of flying that meant a scam was cooking gently and he was getting the better of someone who thought they were getting the better of him.

Everything was all so… worthy. And it was stifling.

Then he thought about this morning, and smiled. Okay, he'd got stuck, but the shadowy night-time climbing fraternity reckoned the Post Office to be particularly challenging. And he'd talked his way out of the problem. All in all, it was a win. For a while there, in between the moments of terror, he'd felt alive and flying.

A heavy tread in the corridor indicated that Gladys was on the way with his mid-morning tea. She entered with her head bent down to avoid the lintel and, with the skill of something massive yet possessed of incredible coordination, put the cup and saucer down without a ripple. She said: 'Lord Vetinari's Carriage Is Waiting Outside, Sir.'