An ancient Chinese book also known as the Book of Changes. It presents a philosophical and cosmological system based on the idea of relationships of opposites, commonly called
Yin and Yang. These are represented by a single bar (yang, masculine, odd) or a divided bar (Yin, feminine, even). These are mixed in sets of three, known as trigrams, and two sets of trigrams, called
hexagrams.
The order of the symbols was switched around 3,000 years ago, making understanding the I Ching as a philosophical text more difficult. Confucius wrote a series of commentaries on it called the
Shi Yi. Today, most Westerners use the I Ching primarily as a
divinatory tool. The selection of trigrams or hexagrams is accomplished through the casting of
lots in the form of tossing coins and counting heads compared to tails, or through the use of tossing a bunch or sticks traditionally made of yarrow, and counting the number of sticks.
AUTHOR: Donald Michael Kraig