Those who are not dissatisfied will never make any progress

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

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 the balance between constructive criticism and judgment. Within that balance we will uncover crucial input for making our ideas a reality.

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

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

Improvement usually means doing something that we have never done before.

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