"It was the 2,400-year-old Tao Te Ching of Lao Tzu."
Yin yang
GNU Free Documentation LicenseYin yang - Credit: widodo

The Tao Te Ching is the fundamental text of Taoism, a pantheistic religion which originated in China. It is a naturalistic system of beliefs. The word Tao means 'path' or 'way'.