[Life space was defined as] the totality of facts which determine the behavior (B) of an individual (or group/organization) at a certain moment. The … - Kurt Zadek Lewin

The objective of social change might concern the nutritional standard of consumption, the economic standard of living, the type of group relation, the output of a factory, the productivity of an educational team. It is important that a social standard to be changed does not have the nature of a “thing” but of a “process.”.

The outlook of a Bruno, a Kepler, or a Galileo is determined by the idea of a comprehensive, all-embracing unity of the physical world. The same law governs the courses of the stars, the falling of stones, and the flight of birds. This homogenization of the physical world with respect to the validity of law deprives the division of physical objects into rigid abstractly defined classes of the critical significance it had for Aristotelian physics, in which membership in a certain conceptual class was considered to determine the physical nature of an object.

The study of the conditions for change begins appropriately with an analysis of the conditions for “no change,” that is, for the state of equilibrium.