From the Hello Internet podcast episode 42, on the subject of the attractiveness of faces:

CGP Grey: The whole notion of attractiveness is something that exists in your brain. It doesn't exist on the person's face [...] it's not a thing that's really there. What you're really looking at is a thin layer of meat on top of some bone, with some watery sacs in the middle that look out at you – that's what a face really is.

Brady: Wow, Grey, that's lovely – was that part of your wedding vows?