“Unless all sources of waste are detected and crushed, success will always be just a dream.” 

Toyota Production System: Beyond Large-Scale Production by Taiichi Ohno (Productivity Press, 1978) p. 59.

Note from Ray: Taiichi Ohno was the Toyota leader most responsible for developing the system of thinking and methods that we now call “Lean.” He did much of this work in the 1950s and 60s. He died in 1990.