“The key to success is to have a production system that highlights problems and a human system that produces people who are able and willing to identify and solve them.”  

Toyota Culture  by Jeffrey Liker & Michael Hoseus (McGraw Hill, 2008) p. 39

Note from Ray: When I share this quote during training, I usually add the following phrase to the end:
“…and a daily management system that focuses problem-solving on the most important problems.”