You can tell when something's not moving forward anymore. When the doubts you have about it don't go away.
“I know that elections must be limited only to those who understand that the Arabs are the deadly enemy of the Jewish state, who would bring on us a slow Auschwitz - not with gas, but with knives and hatchets.”
“The Third Quartet I made the instruments in pairs - Two different pairs - Violin and viola, and violin and cello. They played very different things from each other all through the whole piece.”