The Ordo Finitus
The Final Order is the unique belief of the Brotherhood of Dark Jedi, espousing the total domination of the Dark Side of the Force over all life. Including the destruction of the Order of the Jedi Knights.
Many Elders preach about a path to achieving this goal, called the Final Way. There is no strict dogma about the actual process of achieving the Consummation of the Final Way, but the Elders encourage research, exploration, and outright war as a way of acheiving this goal. In particular Trevarus Caerick is fond of quoting the alleged commandments of Lord Darth to his first three students. These are called the Way of the Seven Souls.
I: Before all thou shalt be a pillar of stone, eternal and inviolate
II: Allow none to escape the fire of thine convictions, that all may be brought to follow Me
III: The steel of thine blade shall bring the damned before the Lord of Justice
IV: In blood thou shalt cleanse the weak from the fold that all may grow strong in their destruction.
V: Sorrow shall be the first step along my sacred way. Bring all to my truth in their suffering.
VI: Even as I am thine Master, thou shalt follow the Lords who reign in My Name.
VII: Bring forth the void of thine soul, that all lights may pass into the darkness from whence they sprung