http://www.rigpawiki.org/index.php?title=Four_reliances
The following are also considered very important—even indispensable—to know as well:
http://www.rigpawiki.org/index.php?title=Four_seals
http://www.rigpawiki.org/index.php?title=Four_thoughts
http://www.rigpawiki.org/index.php?titl ... easurables
http://www.rigpawiki.org/index.php?titl ... powerments
http://www.rigpawiki.org/index.php?title=Four_powers
http://www.rigpawiki.org/index.php?titl ... ble_truths
http://www.rigpawiki.org/index.php?title=Four_mudras
http://www.rigpawiki.org/index.php?title=Four_joys
http://www.rigpawiki.org/index.php?title=Four_empties
http://www.rigpawiki.org/index.php?title=Four_nails
http://www.rigpawiki.org/index.php?title=Four_maras
http://www.rigpawiki.org/index.php?title=Four_forces
http://www.rigpawiki.org/index.php?titl ... indfulness
http://www.rigpawiki.org/index.php?titl ... of_Gampopa
http://www.rigpawiki.org/index.php?titl ... of_Abiding
http://www.rigpawiki.org/index.php?titl ... idyadharas
http://www.rigpawiki.org/index.php?title=Four_das
http://www.rigpawiki.org/index.php?titl ... chokshyaks
http://www.rigpawiki.org/index.php?title=Four_extremes (See also: Eight Extremes)
http://www.rigpawiki.org/index.php?title=Four_visions (See also: The Six Lamps)
http://www.rigpawiki.org/index.php?titl ... l_Illusion (See also: Eight Sections of Magical Illusion)
This Three can also be another very important Four if we include Refuge (although Refuge is included by default within the following Three):
http://www.rigpawiki.org/index.php?titl ... principles
Vimalamitra describes Five kinds or types of Vidya or Rigpa, however it looks like Rigpawiki describes Four:
http://www.google.com/search?q=site%3Ar ... +OR+Ground
And I just want to add here as well The Eight Examples or Similes of Illusion:
http://www.rigpawiki.org/index.php?titl ... f_illusion
Edit - Just saw this post:
The Four Subdivisions of Anuyoga
For more Fours:
http://www.google.com/search?q=site%3Ar ... 9lkJB-s0rI
(Did I miss any other very important Fours?)



