Yin and yang

 Originating in ancient chinese philosophy yin And yang is the concept that there exist cosmic principles or forces that are opposites but complementary which interact interconnect support and perpetuate each other. Together they form a dynamic system in which the whole is greater than the interdependent components and both parts are essential for the cohesion of the whole. ”Yin”is retractive passive contractive and receptive in nature in a contrasting relationship to ”yang ” that is repelling Active expansive and repulsive in principle. Yin is associated to more rounded feminine characteristics and yang as sharp and masculine traits.