A couple of gems from The Vernon Touch:
"I want to say something about simplicity . . . simple. In any great art, especially in painting, you should know not to keep adding and touching up, because the simpler you can express a thought, or the simpler you can do anything, the better the method." -- January, 1969
". . . simplicity is the keynote. The effect is everything."
"If some of these extremely clever younger performers would strive for simplicity, clarity and easily understandable effects they would reach their goals much sooner.
Strive to make everything crystal clear by avoiding any extra moves." -- February, 1989
Hope this helps to jog your memory.