The only thing of real importance that leaders do is to create and manage culture. If you do not manage culture, it manages you, and you may not even be aware of the extent to which this is happening.
Edgar ScheinIn most organizational change efforts, it is much easier to draw on the strengths of the culture than to overcome the constraints by changing the culture.
Edgar ScheinA pattern of shared basic assumptions invented, discovered, or developed by a given group as it learns to cope with its problems of external adaptation and internal integration that have worked well enough to be considered valid and therefore, to be taught to new members as the correct way to perceive, think and feel in relation to those problems.
Edgar Schein