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

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

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

The best approach is to dig out and eliminate problems where they were assumed not to exist.

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.

Are you too busy for improvement? Frequently, I am rebuffed by people who say they are too busy and have no time for such activities. I make it a point to respond by telling people, look, you’ll stop being busy either when you die or when the company goes bankrupt.

Those who are not dissatisfied will never make any progress