Rob Dietz, the director of the Center for the Advancement of a Steady State Economy, spoke on achieving a steady-state econmy on May 12th at the Corvallis-Benton County Public Library. His talk was recorded and produced by Roberta Hall, host of Health and Healthcare Forum.   According to Dietz, in a steady-state economy, energy and resource use are reduced to a level that is within ecological limits and the goal of maximizing GDP is replaced by the goal of maximizing quality of life.