"I always forbade everyone to clean my studios, dust them, not only for fear they would disturb my things, but especially because I always counted on the protection of dust."

"It’s my ally. I always let it settle where it likes. It’s like a layer of protection. When there’s dust missing here or there, it’s because someone has touched my things. I see immediately someone has been there. And it’s because I live constantly with dust, in dust, that I prefer to wear gray suits, the only color on which it leaves no trace."

Said Picasso.