The approach is both simple and elegant; clear and commonsensical.
Lean is both a philosophy and a discipline which, at its core, increases access to information to ensure responsible decision making in the service of creating value. With increased access to information people feel more respected, teams are more motivated, and waste is reduced.
Note: The Lean definition from PK
Kaizen is a state of continuous improvement where people naturally look for ways to improve poorly performing practices.
Note: The Kaizen definition
Good leaders provide enough management oversight to give a clear and coherent idea of vision and purpose, but not to the extent that they micromanage. They ensure employees have the information they need to make good decisions, and then step back to let the good decisions happen.
Note: A good thought about letting subordinates think.