@Fairbanks,
My goodness, you folks do keep late hours. Lots of interesting comments and questions in the wee small hours, and I'd like to share some reactions, but there's really too much to go point-by-point. I'm in general agreement with the overall tendency of what everyone's been saying, so if I may be allowed to offer a sort of general summary reaction:
Nous is one of those tough-to-translate words. Most modern translators opt for "Intellect," but I think that's misleading. For most people, "intellect" implies "rationality," but in Plotinus rationality is a property of
Psyche, specifically the "rational soul," or
dianoia, while Nous is what one might call "super-rational" or "meta-logical." Hadot and the older translaters, such as Thomas Taylor, opt for "spirit," but I think that's confusing, too, because it connects etymologically with the "breath-spirit" (
pneuma), which is also a property or function of Psyche.
The way I look at it is to focus first on the rational soul, dianoia, and note that it implies dualistic thinking. In fact, rationality by definition is dualistic: "ratio," as in mathematics, denotes a comparison or relationship between two things. This aspect is further highlighted by Plotinus' assertion that the "content," so to speak, of Psyche is the
logoi. Among the many meanings of
logos in ancient Greek is "a proportion," which again is a relationship or comparison between two things. So the rational mind obtains knowledge (or at least "true opinion") through processes of comparing and ranking things, and mainly verbally. Hence the importance of dialectic in the Platonist tradition.
The "content" of Nous, on the other hand, is the Forms, which Nous "has" directly and absolutely. I think this is what Plotinus is getting at with the notion that Nous "thinks itself" and that this is its "active actuality." Jeepr's comparison of this state to that of Eastern meditation is correct insofar as we're talking about non-verbal, non-imagistic, non-dualistic forms of meditation, such as zazen. This is what the Greek/Western tradition refers to as "contemplation," distinguishing it from meditation conceived of as "discursive," i.e., "meditating on" something. Marcus Aurelius provides an outstanding example of this view of meditation.
So I'd prefer to translate Nous with a phrase like "Objective Mind." I'd opt for "Intuition" if that word didn't mean something like "gut feeling" to so many people, which to me refers to a function of the lower, "irrational" soul. What I have in mind is more like Jung's definition of intuition (one of the four psychic functions in his system) as a sort of immediate grasp of the whole of a situation.
In general, I think the Platonic school's emphasis on mastery of dialectic and "rationality" is precisely to enable the student to go beyond that process. Diotima's famous speech about the mysteries of love in the
Symposium expresses this. It's a sort of step-by-step process meant to lead the student "upward" from the world of transitory appearances to the truly real world of absolute and eternal being. The Enneads contain numerous famous "ascents to the One."
I'll mention, also, that I think Jeepr's comments on gnosticism were right on target.
That doesn't cover everything I've read here that I found interesting, but enough is enough, and maybe already too much.