If you're trying to achieve, there will be roadblocks. I've had them; everybody has had them. But obstacles don't have to stop you. If you run into a wall, don't turn around and give up. Figure out how to climb it, go through it, or work around it.
I once got a letter from a woman who told me she was 90. She said if she were 30 years younger, I would have had to watch out. I guess 60 seems really young when you're 90. She said she would eat me with a spoon.
Conceptual art became the liberating idea that gave the art of the next 40 years its real impetus.

