Yin And Yang

This Symbol(Yin-Yang) represents the ancient Chinese understanding of how things work. The outer circle represents "everything", while the black and white shapes within the circle represent the interaction of two energies, called "yin" (black) and "yang" (white), which cause everything to happen.


While "yin" would be dark, passive, downward, cold, contracting, and weak, "yang" would be bright, active, upward, hot, expanding, and strong.
In Taoist philosophy, yin and yang arise together from an initial quiescence or emptiness (wuji, sometimes symbolized by an empty circle), and continue moving in tandem until quiescence is reached again. Yin and yang thus are always opposite and equal qualities.

Yin and yang transform each other: like an undertow in the ocean, every advance is complemented by a retreat, and every rise transforms into a fall.