From "On the 'Lyric Suite.'" 1969, essay excerpted in The Writings of Robert Motherwell, edited by Dore Ashton with Joan Banach, University of California Press, 2007.
"On an impulse one day in a Japanese shop in N.Y.C., where I was buying a toy for a friend's child, I bought 10 packets of 100 sheets each of a Japanese rice paper called "Dragons & Clouds". . .
"Some weeks later--early in April, 1965, it came to me in a flash: PAINT THE THOUSAND SHEETS WITHOUT INTERRUPTION, WITHOUT A PRIORI TRADITIONAL, OR MORAL PREJUDICES OR A POSTERIORIONES, WITHOUT ICONOGRAPHY, AND ABOVE ALL WITHOUT REVISIONS OR ADDITIONS UPON CRITICAL REFLECTION AND JUDGEMENT. GIVE UP ONE'S BEING TO THE ENTERPRISE AND SEE WHAT LIES WITHIN WHATEVER IS IS. VENTURE. DON'T LOOK BACK. DO NOT TIRE. EVERYTHING IS OPEN. BRUSHES AND BLANK WHITE PAPER!"