I asked, "How do you know [the death-defier] was telling you the truth?"
       Don Juan shook his head in amazement, if not revulsion.  "When you're facing 
       that inconceivable unknown out there," he said, pointing all around him, 
       "you don't fool around with petty lies.  Petty lies are only for people who 
       have never witnessed what's out there, waiting for them."

What is Toltec/Olmec "impeccability?" The word derives from the concept of 'character and integrity' ...impeccable personal integrity and unimpeachbly high character. (Don Juan Matus could have instead called it "Unimpeacha- bility.")

I've been messing with this question for a couple of decades, as part of "Toltec path." I conclude that the stance of Impeccability is the exact opposite of the self-important stance taken by internet trolls (also called 'Petty Dictators.') To gain profound insight into the nature of "Impeccability," we simply list every low, small, petty feature of the worst of internet trolls or 'microscopic tyrants' ...then reverse them!

That gives us a tight clear description of the "impeccable" stance of the Toltec person-of-knowledge, the people achieving that level of high character and integrity which we're all supposedly pursuing.

Becoming "Impeccable" among other things, means to transform yourself into a person of character and integrity ...but not to simply behave that way, but instead to adopt an altered state of consciousness, where we leave our entire "muggle world," petty-reality behind, and step into a very different one.

Now just try to define exactly what these terms even mean! Integrity? Character? Whaaat? Heh, well, here's one method below...

To become "impeccable," we become the exact opposite of internet trolls, in every detail. We simply remove every bit of our low creepy actions, the actions which normally fill the lives of ordinary humans.

Remove ALL of them.

Every last one.

It requires years of effort.

To start on this journey, for one entire month, write down every time you lie. Just collect tick-marks. Keep small card, or set up an app. Don't try to not lie, just count up the number. How many did you get? More than ten, less than a hundred? We perform this task to sensitize us to the number of times we actually tell fibs. Once recognizing/noting down our lies has becomes a habit, next, try telling no lies at all for an entire week. Also don't exaggerate anything, don't spew any distortions, since those are dishonesties as well. Just be honest and up-front, straightforward and truthful. When asked questions, give the simple facts, without weaseling or protecting-your-ass, without trying to make yourself look good, or to mislead or confuse. Also, attempt to stop lying to yourself (You'll find that surprisingly, NONE of this is easy.)

Then take a break, as long as you want. Next, decide do it for a whole month. Then finally, we eventually decide to live out the entirety of our remaining lives without lying to people, or even making slight distortions, insignificant exaggerations, etc.

That's how everyone who attains the highest "impeccable personal integrity" must behave. Impeccability is the opposite of telling petty little lies to protect our egoistic self-importance. It's the opposite of a very long list of petty actions commonly exhibited by every internet troll.

Impeccability has nothing to do with saintliness, Christian morals, etc. Instead it's strictly a technique of the masters, one secret of the advanced practitioners. Once you're on the Toltec path, you'll quickly discover that Impeccability is a source of immensley enhanced Warrior-power, and, at the higher levels, a source of impenetrable automatic defenses. You'll accumulate 'energy' like you wouldn't believe. You'll become as polished steel, without the smallest cracks which might give any purchase to opponents, totally immune to attack. Undefeatable.

You'll become oddly fearless (but not to excess.) All your phobias will mysterously vanish. Cowardly nerds like me can go to bars and actually talk to people (even becoming 'life of the party' types.) Go forth to test your habitual acrophobia, and suddenly be dancing on the edge of building-rooves, where previously you'd have to crawl on your belly to even approach the dropoff. Try hitting on members of the opposite sex totally out of your league, and usually score (and then upon waking in somebody's bed the next morning, finding you've dropped back into petty-world, and need to grab your clothes, and flee!)

Impeccability, added to the usual Toltec skills, involves utterly blatant magic. Constantly maintaining high, even stratospheric impeccability, can put us into a subtly new world, one where "Murphy's Law" reverses, and we barely lift a finger to defeat opponents ...since Spirit instead intervenes, with synchronicities and full-blown miraculous events backing us up. "God" suddenly is on our side (this is the internal 'god,' the one whom we really are, and who constantly recoils in disgust at our ordinary lives filled with acts of petty garbage. While maintaining high impeccability, where in the past, our inner 'god' would have nothing to do with us ...suddenly it's right there helping out, letting us "win the lottery," quite literally if required. )

With impeccability, apparently we somehow harness our other skills to become invisible to all the trolls and petty dictators of the world (at least to the normal human ones.) They'll mysteriously leave us alone ...unless we require them to step up and act as 'foils;' becoming the targets in our energy-gathering "Petty Dictator battles."

On attaining high personal impeccability, we can detect other impeccable people, or expose the concealed petty dictators: we ineffably "press our impeccability against" a person (in the real world, or even via text messages,) and our target will either flee suddenly, or will explode in rage and blaming. For any onlookers it's a very mysterious event. For our petty-dictator opponents, dealing with us is like having their mind in a vise, slowly constantly tightening.

And that's why Don Juan was constantly, constantly talking about Impeccability. Yet it seems he didn't clearly define the word? He does define the overt results, in a mysterious statement "The warrior leaves nothing to chance." This phrase refers to stopping-the-world, to the massive streams of synchronicites which arise, once we achive a high enough level of "Unimpeachable-ness." The world stops operating by random chance, and instead we find ourselves in a "probability storm," one so large that our normal-world colleagues cannot help but notice and comment.

Provisionally knowing this definition of "Impeccable," go now and re-read the books, particularly the second one. Suddenly DJM is teaching us new material which we'd never before encountered. That mysterious word "impeccable" has now become simple. It means "behaved with Highest Personal Integrity." The material now reads quite differently than before.

But how can we ever approach such a high state, considering how low and disgusting our lives currently are?

Heh, simply become impeccable about our past. Hide nothing. Confront and take responsibility for our worst behavior. This is called The Recapitulation of course. Beware, because with 'recap,' we often discover more than a few personal problems than we already knew. Horror! True horror in abundance. (That's why most practitioners only recapitulate our more recent events, in reverse time, starting from adulthood. We never first dare to treat all of our most traumatic childhood experiences. Doing so will push our level of Impeccability through the roof, so much so, that I find that a backwards-time recapitulation becomes almost unneccessary.)

On the impeccable path, this ruthless "Truth-telling" strategy is just one single warrior-move among many, a single not-doing, only the tip of the iceberg.

     "It is hard to believe that a man is telling the truth when you know 
      that you would lie if you were in his place." - HL Mencken

MISC. STUFF

With impeccablity comes natural, built-in utter confidence, not petty strutting, but instead a deep knowledge that we're no longer disgusting inside. If everyone could read our minds, seeing into every bit of our souls exposed under a spotlight ...they'd encounter nothing to trigger contempt, nothing repellent, none of our past actions reeking of repulsive shittiness.

How do we recognize what Impeccability really is? Just pair off the behavior of typical trolls, versus Impeccable warriors. "Impeccability" is on the opposite end of the spectrum, opposite from all "troll" petty behavior.

Selfless versus selfish

Self-effacing, self-erasing, versus Self-aggrandizing, self-promoting

Takes personal responsibility, versus constantly blaming others

successful versus self-defeating

Unusually honest, with the usual expected lies all mysteriously missing, versus unusually dishonest, with simple straightforward truth-telling oddly missing

Fearless versus cowardly

Describes self in derogatory terms, describes others in glowing terms, versus describing oneself in glowing terms, others in derogatory terms.

Constantly asks questions, double-checking what others think and say, versus never asking questions (because WE always know what others are REALLY thinking, and besides, they'd always lie to us if we asked them anything ...same as we ourselves always do when asked. So why even ask?)

Honestly answers personal questions, even the questions not asked, versus constantly avoiding all questions, always changes the subject, or answers different question than asked.

Living in "abundance-world," able to create anything on demand, ab initio, versus living in a world completely dominated by zero-sum games, where the only possible way to get anything, is to steal it from someone else.

Often self-belittling, but congratulates others, versus self-congratulatory, constantly belittling others.

Grade-school teacher who throws themselves in front of an active shooter, versus the petty ones who grab a little kid, using them as a sheild against the bullets.

Pursuing feelings of being a nobody, becoming a nothing, not important, and making this public ...versus pursuing feelings of arrogant superiority, a sneering outlook directed towards all the inferior people around us (but this superiority-stance must be kept carefully concealed.)

"Going Covert" so you can help people without them finding out, versus going covert so you can mess with people, steal from them, gleefully cause pain, and they'll never find out who's doing it.

People who are always fixing the things which everyone ignores, versus those who ignore all such problems, and if they should break something, dearly hope that nobody saw.

People who usually put others before themselves, versus those who usually put themselves before others.

Secretly gleeful to see others succeed, versus secretly gleeful to see others fail.

Perceiving the disgusting things inside themselves, then fixing them, verus denial of those disgusting things, and then psychologically "projecting" all them onto others. Then attacking those others.

Constantly avoiding public accolades, hiding out from them, verus constantly pursuing public accolades, chasing the spotlight, standing up to gain applause.

Pull back and let the deserving win, versus themselves striving to win at any cost.

The non-zero-sum people, who are Creating... from nothing! (create ideas, create art, create wealth,) versus the zero-sum game people, who rarely create anything, they instead only steal from everyone ...while remaining utterly certain that their act of winning is createing hoards of pathetic losers.

Cackle gleefully at one's own failures, versus cackle gleefully at others' failures.

Laughing at pain, versus laugh at others' pain.

Here's me holding forth on The 'pathological dishonesty' disease 1998

A good book about the opposite of Impeccability is " The People of the Lie" by M. Scott Peck. As above, first learn every smallest detail about the real-world trolls described in that book ...then simply sculpt your entire life into something the exact opposite.