"In the light, there is a darkness and in the darkness, a light. It is the way with us all. Be a prisoner of neither Bogan nor Ashla. Strive to live in balance. As Tython itself teaches us, it is dangerous to do otherwise. And the danger is there — always." – Master Ketu
I am a firm believer in the fact that those who forget their history are doomed to repeat it. There are those who do not wish to acknowledge the Gray Order as Jedi. They, however, forget that the first Jedi were not called Jedi at all, but Je’daii. The Jedi came from falling away from the balance of the Force.
On the planet of Tython, the Je’daii made their home. The Je'daii Order's primarily philosophy was that of the Balance. Because of Tython's intense reactions to imbalance in the Force, the Je'daii strived to maintain personal balance between the light and dark sides of the Force.
This philosophy was also inspired by Tython's moons: bright Ashla, represented the light side of the Force, and the dark moon Bogan, represented the dark side. In Je'daii philosophy, they acknowledged the fact that there was always a light within darkness, and darkness within light, so that it was impossible for one to ever be truly free of either.
Unlike the Jedi Order, Je'daii were encouraged to give into the temptations of both the light and the dark, as they believed it was necessary to embrace both in order to learn more about the Force. The Je'daii viewed living on Tython as a near-constant meditation and study of the Force, and the Great Journey was intended to expose young Journeyers to the various disciplines and arts that were studied at each temple.
The Je'daii Order developed their own code, which illustrated the primary tenets of the Order's philosophy, and was taught at all of the Temples across Tython. Because of Tython's proclivity for Force Storms, the Je'daii took it upon themselves to police their ranks for those who fell out of balance, and they exiled those who were out of balance to Tython's moons. Those who delved too deep into the dark side were exiled to Ashla, where they were instructed to meditate on the light side and the bright moon of Ashla. Those Je'daii who clung to the light side over the Balance were sent to Bogan, where they meditated on the darkness of the moon to bring themselves back into balance.
The Je'daii Order, taking their name from the language of the Dai Bendu monks of the Talid species, combined the words je, meaning mystic, and dai, meaning center. Notice how similar the Je’daii Code and the Gray Order’s Code are.
"There is no ignorance; there is knowledge.
There is no fear; there is power.I am the heart of the Force.
I am the revealing fire of light.
I am the mystery of darkness
In balance with chaos and harmony,
Immortal in the Force."
― The Je'daii Code
Reference from: Wookieepedia/Je’daii Order