The cornerstone of Immanuel Kant’s ethical philosophy is that we should always treat other people as ends in themselves rather than as merely means to an end. Terry Pratchett advances the same moral argument in his many Discworld novels. In Carpe Jugulum (1998), a character describes sin as «when you treat people as things. Including yourself». And when Inmmanuel Kant and Terry Pratchett agree on something, it seems to me a very good reason for thinking it true.

It’s the End of the World, páginas 176 y 177
Adam Roberts
Elliot and Thompson Limited