I think the quote from #30 adds to what pretty much everyone has already said:
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"I can deal with Visser Three."
<Can you? We have tried many times. And yet, he still lives.>
"Humility? From an Andalite?"
<Realism from an Andalite,> Cassie said.
Visser One barked out a laugh. "You're afraid of him."
<Tell her, "yes,"> I said privately to Cassie. <Tell her he's killed a lot of us.>
<Yes. We were far more numerous, once. Many of us have died fighting Visser Three.>
A lie, of course. But it sounded real enough. Visser One would latch on to the information. She would think we were fools for revealing it.
We wanted her to think us fools.
"Do you imagine I will be more gentle when I am in power, again?"
I started to tell Cassie what to say. But she was already there, ahead of me.
<No. We simply think you will be weaker,> Cassie said. <The disruption of command will work to our benefit. And in direct battle you will be easier to kill than Visser Three. Humans, Controllers or not, die easily.>
Again, it had the feel of honesty. The insult would make it seem honest.
And it had the added benefit of focusing my mother. . . Visser One... on the danger of Visser Three. We were reminding her just how deadly Visser Three could be.
"And yet..." Visser One mused. "And yet, the casualty reports from Earth are always weighted heavily toward Hork-Bajir and Taxxons. In fact. . . I am trying to recall when I have ever seen a report listing a human-Controller casualty."
My guts were ice.
We had made a mistake. We had made a terrible mistake.
<What do I say?> Cassie demanded.
<l . . . I . . .> My brain wouldn't work. The thoughts wouldn't form into any sort of order.
Visser One had just put her finger on our greatest secret.
<Say something!> Rachel yelled.
<No, too late,> Jake interrupted. <Too late. Let it go. No choice.>
"Well, well, well," Visser One said.
She knew.
There was only one reason why a group of Andalite guerrilla fighters would inflict more casualties on Hork-Bajir than on humans: The Andalite guerillas weren't Andalites.
A human would spare a human life.
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