"Each material has its own message ." -- Frank Lloyd Wright, Architectural Record, (April/1928), copyright 1975 by McGraw-Hill, Inc. All rights reserved. Reproduced with the permission of the publisher. "Bring out the nature of the materials, let their nature intimately into your scheme." -- Frank Lloyd Wright, Architectural Record, (March, 1908), copyright 1975 by McGraw-Hill, Inc. All rights reserved. Reproduced with the permission of the publisher. "Form and function thus become one in design and execution if the nature of materials and method and purpose are all in unison." -- Frank Lloyd Wright, An Authobiography. 1932. Revised, 1943. New York: Duell, Sloan and Pearce. Copyright by the Frank Lloyd Wright Foundation. Courtesy The Frank Lloyd Wright Foundation.