"Tooth decay?" Teg was shocked off his Mentat track and Odrade, observing this, saw that his reaction was precisely what Taraza wanted. Taraza was playing her Mentat Bashar with a fine hand.

And I am supposed to see this and learn from it, Odrade thought.

"Tooth decay," Taraza repeated. "A simple implant at birth prevents this bane for most of humankind. Still, we must brush the teeth and otherwise care for them. It is so natural to us that we seldom think about it. The devices we use are assumed to be wholly ordinary parts of our environment. Yet the devices, the materials in them, the instructors in tooth care and the Suk monitors, all have their interlocked relationships."

"A Mentat does not need interdependencies explained to him," Teg said. There was still curiosity in his voice but with a definite undertone of resentment.

"Quite," Taraza said. "That is the natural environment of a Mentat's thinking process."

"Then why do you belabor this?"

"Mentat, look at what you now know of these Honored Matres and tell me: What is their flaw?"

Teg spoke without hesitation: "They can only survive if they continue to increase the dependency of those who support them. It's an addict's dead-end street."

"Precisely. And the danger?"

"They could take much of humankind down with them."

"That was the Tyrant's problem, Miles. I'm sure he knew it. Now, pay attention to me with great care. And you, too, Dar." Taraza looked across the aisle and met Odrade's gaze. "Both of you listen to me. We of the Bene Gesserit are setting very powerful... elements adrift in the human current. They may jam up. They are sure to cause damage. And we..."

Once more, the lighter entered a period of severe buffeting. Conversation was impossible while they clung to their seats and listened to the roaring, creaking around them. When this interruption eased, Taraza raised her voice.

"If we survive this damnable machine and get down to Gammu, you must go aside with Dar there, Miles. You have seen the Atreides Manifesto. She will tell you about it and prepare you. That is all."

Teg turned and looked at Odrade. Once more, her features tugged at his memories: a remarkable likeness to Lucilla, but there was something else. He put this aside. The Atreides Manifesto? He had read it because it came to him from Taraza with instructions that he do so. Prepare me? For what?

Odrade saw the questioning look on Teg's face. Now, she understood Taraza's motive. The Mother Superior's orders took on a new meaning as did words from the Manifesto itself.

"Just as the universe is created by the participation of consciousness, the prescient human carries that creative faculty to its ultimate extreme. This was the profoundly misunderstood power of the Atreides bastard, the power that he transmitted to his son, the Tyrant."

Odrade knew those words with an author's intimacy but they came back to her now as though she had never before encountered them.

Damn you, Tar! Odrade thought. What if you're wrong?

Teg's thoughts were in turmoil as he returned to Gammu from the Guildship. He stepped from the lighter at the black-charred edge of the Keep's private landing field and looked around him as though for the first time. Almost noon. So little time had passed and so much had changed.

To what extent would the Bene Gesserit go in imparting an essential lesson? he wondered. Taraza had dislodged him from his familiar Mentat processes. He felt that the whole incident on the Guildship had been staged just for him. He had been shaken from a predictable course. How strange Gammu appeared as he crossed the guarded strip to the entry pits.

Teg had seen many planets, learned their ways and how they printed themselves on their inhabitants. Some planets had a big yellow sun that sat in close and kept living things warm, evolving, growing. Some planets had little shimmer-suns that hung far away in a dark sky, and their light touched very little. Variations existed within and even outside this range. Gammu was a yellow-green variation with a day of 31.27 standard hours and a 2.6 SY. Teg had thought he knew Gammu.

When the Harkonnens were forced to abandon it, colonists left behind by the Scattering came from the Danian group, calling it by the Halleck name given to it in the great remapping. The colonists had been known as Caladanian in those days but millennia tended to shorten some labels.

Teg paused at the entryway to the protective revetments that led from the field down beneath the Keep. Taraza and her party lagged behind him. He saw Taraza was talking intently to Odrade.

Atreides Manifesto, he thought.

Even on Gammu, few admitted to either Harkonnen or Atreides ancestry, although the genotypes were visible here - especially the dominant Atreides: those long, sharp noses, the high foreheads and sensual mouths. Often, the pieces were scattered - the mouth on one face, those piercing eyes on another and countless mixtures. Sometimes, though, one person carried it all and then you saw the pride, that inner knowledge:

"I am one of them!"

Gammu's natives recognized it and gave it walkway room but few labeled it.

Underlying all of this was what the Harkonnens had left behind - genetic lines tracing far away into the dawn times of Greek and Pathan and Mameluke, shadows of ancient history that few outside of professional historians or those trained by the Bene Gesserit could even name.

Taraza and her party caught up with Teg. He heard her say to Odrade: "You must tell Miles all of it."

Very well, she would tell him, he thought. He turned and led the way past the inner guards to the long passage under the pillboxes into the Keep proper.

Damn the Bene Gesserit! he thought. What were they really doing here on Gammu?

Plenty of Bene Gesserit signs could be seen on this planet: the back-breeding to fix selected traits, and here and there a visible emphasis on seductive eyes for women.

Teg returned a guard captain's salute without changing focus. Seductive eyes, yes. He had seen this soon after his arrival at the ghola's Keep and especially during his first inspection tour of the planet. He had seen himself in many faces, too, and recalled the thing old Patrin had mentioned so many times.

"You have the Gammu look, Bashar."

Seductive eyes! That guard captain back there had them. She and Odrade and Lucilla were alike in this. Few people paid much attention to the importance of eyes when it came to seduction, he thought. It took a Bene Gesserit upbringing to make that point. Big breasts in a woman and hard loins in a man (that tightly muscular look to the buttocks) - these were naturally important in sexual matchings. But without the eyes, the rest of it could go for nothing. Eyes were essential. You could drown in the right kind of eyes, he had learned, sink right into them and be unaware of what was being done to you until penis was firmly clasped in vagina.

He had noted Lucilla's eyes immediately after his arrival on Gammu and had walked cautiously. No doubts about how the Sisterhood used her talents!