Lewin explicitly stated that either the person or the environment may be more important in particular situations:"Every psychological event depends upon the state of the person and at the same time on the environment, although their relative importance is different in different cases."Thus, Lewin believed he succeeded in creating an applicable theory that was also "flexible enough to do justice to the enormous differences between the various events and organisms." In a sense, he held that it was inappropriate to pick a side on the classic psychological debate of nature versus nurture, as he held that "every scientific psychology must take into account whole situations, i.e., the state of both person and environment." Further, Lewin stated that:"The question whether heredity or environment plays the greater part also belongs to this kind of thinking. The transition of the Galilean thinking involved a recognition of the general validity of the thesis: An event is always the result of the interaction of several facts."
