The Eighth World Wilderness Congress met in Anchorage, Alaska, in 2005. The symposium on science and stewardship to protect and sustain wilderness values was the largest of multiple symposia held in conjunction with the Congress. The papers contained in this proceedings were generated at this symposium, submitted by the author or authors for consideration for inclusion in this proceedings, and have been organized into nine major topics: (1) Alaska: past, present and future; (2) connections between wilderness and communities; (3) values to local and distant societies of wilderness protection; (4) establishing priorities and developing policies for wilderness protection; (5) wilderness stewardship challenges in a changing world; (6) encouraging stewardship through education; (7) place and spirit: commitment to wilderness; (8) protecting ecological integrity of wilderness; and (9) wilderness, water, and wisdom.