We have to grasp not only the Know-How but also 'Know Why', if we want to master the Toyota Production System.

- Shigeo Shingo

Lean is a way of thinking- not a list of things to do

- Shigeo Shingo

The most dangerous kind of waste is the waste we do not recognize.

- Shigeo Shingo

A relentless barrage of 'why’s' is the best way to prepare your mind to pierce the clouded veil of thinking caused by the status quo. Use it often.

- Shigeo Shingo

Even the greatest idea can become meaningless in the rush to judgement. To gauge an idea as feasible we must cut our ties to the status quo and find …

- Shigeo Shingo

It's only the last turn of a bolt that tightens it - the rest is just movement.

- Shigeo Shingo

There are four purposes of improvement: easier, better, faster, and cheaper. These four goals appear in the order of priority.

- Shigeo Shingo

When you buy bananas all you want is the fruit not the skin, but you have to pay for the skin also. It is a waste. And you the customer should not ha…

- Shigeo Shingo

Unless you change direction, you will end up where you are headed.

- Shigeo Shingo