Fahrenheit 451 - Ray Bradbury

"People don't talk about anything."
"Oh, they must!"
"No, not anything. They name a lot of cars or clothes or swimming-pools mostly and say how swell! But they all say the same things and nobody says anything different from anyone else. And most of the time in the cafes they have the jokeboxes on and the same jokes most of the time, or the musical wall lit and all the coloured patterns running up and down, but it's only colour and all abstract."