What is a movie star? It is an illusion. It was everything I ever wanted to be, but it became a kind of shell, non? It was what made me famous and got me women. But it wasn't real.
I don't think my principles change. I think the way in which you apply those principles to modern society changes.
Real progress in understanding nature is rarely incremental. All important advances are sudden intuitions, new principles, new ways of seeing.