A meme from Old Earth Chinese culture, variously replicated and interpreted in the Terragen Sphere in the time since. In Taoist, Confucian, Neotaoist, Nuage, Cosmopagan, and many other philosophies, yin and yang refer to the two inseparable polar opposites or complementaries, the interaction between which determines phenomenal reality. They are not typically regarded as the same as good and evil but rather define abstract qualities, as shown in the following table. The precise nature of yin and yang differs according to the philosophy or memeticity that is explaining it.
Taoism - Text by M. Alan Kazlev Old Earth quietist religion originating in China, based on contemplation, non-contending, cultivating the ch'i, and understanding the interplay of yin and yang. Also includes more dynamic magical, alchemical and martial arts elements and sects.