“Enq: But what is Karma?
Theo: As I have said, we consider it as the Ultimate Law of the Universe, the source, origin and fount of all other laws which exist throughout Nature.
Karma is the unerring law which adjusts effect to cause, on the physical, mental and spiritual planes of being. As no cause remains without its due effect from greatest to least, from a cosmic disturbance down to the movement of your hand, and as like produces like, Karma is that unseen and unknown law which adjusts wisely, intelligently and equitably each effect to its cause, tracing the latter back to its producer. Though itself unknowable, its action is perceivable.
Enq: Then it is the “Absolute”, the “Unknowable” again, and is not of much value as an explanation of the problems of life?
Theo: On the contrary. For, though we do not know what Karma is per se, and in its essence, we do know how it works, and we can define and describe its mode of action with accuracy.
We only do not know its ultimate Cause, just as modern philosophy universally admits that the ultimate Cause of anything is “unknowable.””
H. P. Blavatsky