Empires of the mind : lessons to lead and succeed in a knowledge-based world / Denis Waitley. Waitley, Denis. Leadership. HD57.7 .W335 1995 658.4092 WAE Includes bibliographical references (p. [253]-257) and index. New York : W. Morrow, c1995. c1995. 1995 Text xiv, 266 p. ; eng