“I try to point out to them there's less chance of your becoming just illustrative when you become involved with the plastic elements of painting. So in short this is how I try to adapt it to teaching. You don't see a head as a head, but you see it as a form and as a shape. And you can work as realistically as you care to. But if you just see these things for what they are the chances are you will become more illustrative and you will never develop from this, you know; move out from this…”