Having a baby is the single mos joyous co-experience that two human beings can share, and he wasn't going to miss a second of it.
He got one of the Secret Service men to videotape it for him.

“I REMEMBER WHEN ALL THIS WILL BE AGAIN.”

“HUMAN BEINGS MAKE LIFE SO INTERESTING. DO YOU KNOW, THAT IN A UNIVERSE SO FULL …”

“The money… will talk?' said Mr Spools carefully.'Imps,' said Moist. 'They're on…”

“A witch didn't do things because they seemed a good idea at the time! That was …”