Which Pratchett story has vampires, werewolves, and animated shopping carts?

"A good bookshop is just a genteel Black Hole that has learned how to read." — Pratchett. What book?

"Humanity's a nice place to visit, but you wouldn't want to live there." — Pratchett. What book?

"That was not my fault. I am merely the gonne. Gonnes don't kill people. People kill people." Pratchett. Context?

"Gold and muck come out of the same shaft." — Pratchett. Context and book?

"Paranoids only think someone is out to get them. Wizards know it." — Pratchett. Context?

"For Zhaim, having power and not using it was a form of weakness. And the weak neither survived nor deserved to." Bowling. Context?