"Back when I was working on Yeezus
, I saw this book from the 1800s and it was velvet-covered with brass and everything. I looked at all these people's photos and they look so real and their outfits were incredible and they weren't smiling," he told the crowd
. "The paparazzi always come up to me, 'Why you not smiling?' and I think, not smiling makes me smile… When you see paintings in an old castle, people are not smiling cause it just wouldn't look as cool."