|We will explore ways in which the Enneagram
personality types have been organized into groups of three types
each, what I call the Triadics. In the Riso-Hudson teaching and
writing, there are four such groupings: The Centers, The Object
Relations, The Hornevians, and The Harmonics.
The sets of these four Triadics share a mathematical property
that could not be due to chance. When considered together, the
interplay of the Triadics are an extraordinary demonstration
of seemingly unrelated discoveries from esoteric teachings,
philosophy, mathematics, biology, and theories of consciousness.
What becomes evident is that the Four Triadics constitute a
mathematically closed group. That is, all four are necessary
and sufficient components of one, interdependent system—the
The Four Triadics provide a systematic and objective cross-check
for various theories of the Enneagram and can serve as a conduit
between the Enneagram and other fields of understanding.
The Four Triadics indirectly point to the profound conclusion
that the Enneagram itself is objective. The symmetries we
find in every direction with the Enneagram are beautiful—a
characteristic that great thinkers universally have regarded as an
important indicator of truth.
Joyce Stenstrom is a consultant in ergonomics, an artist, and a
student of philosophy and consciousness. For the past several
years, she has also worked closely with Don Riso developing
materials for The Enneagram Institute.