If you want truly to understand something, try to change it.
Psychologists
Kurt Zadek Lewin
German-American psychologist and the founder of modern social, organizational, and applied psychology (1890-1947). He extended Gestalt psychology into the social domain and formulated B=f(P,E), behavior as a function of the person and the environment. He fled Nazi persecution to the United States in 1933, became a naturalized citizen in 1940, and founded the Research Center for Group Dynamics at MIT. He coined the terms action research and group dynamics and is widely credited with the three-step change model of unfreeze-change-refreeze that still underpins organizational change practice today, training Leon Festinger, Morton Deutsch, and an entire generation of applied social psychologists worldwide.
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Kurt Zadek Lewin's Other Quotes
There is nothing so practical as a good theory.
Behavior is a function of the person and the environment: B = f(P, E).
Research that produces nothing but books will not suffice.
A successful change includes three aspects: unfreezing the present level, moving to the new level, and freezing group life on the new level.
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