This document discusses several influential leaders in the quality revolution: - W. Edwards Deming focused on continual quality improvement through reducing uncertainty and variability, driven by top management leadership. His 14 Points emphasize statistical process control and eliminating fear in the workplace. - Joseph Juran proposed a quality trilogy of quality planning, improvement, and control. He defined quality simply as "fitness for use." - Philip Crosby advocated that quality is free through preventing defects and emphasized conformance to requirements and zero defects. - Armand Feigenbaum promoted a three step approach to quality involving quality leadership, modern technology, and organizational commitment through training.