I thought it was: Two sorts of people: those who divide the world into two sorts of people, and the rest of us.

.... but what I really came here to quote (from guess where) was:

I was told that "You are just a cost centre number on a spreadsheet and that's why your HR system username is now a number and not a name" at a previous employer when they were taken over by a faceless conglomerate headquartered in a dodgy tax haven.

I took great delight in introducing myself as "129877, White, Head of IT" in the style of POWs and reminded people that I wasn't obliged to provide any more information under the terms of the Geneva Convention.