Originally posted by Carl
It may be that he is both calm, calculating, and brilliant, but also insane. what could be worth the billions of deaths caused by his actions?
The survival of mankind.
Your description matches the impression I have of Bosch best. He's incredibly intelligent, in fact, maybe the only one making the right conclusions. He knows a lot, he knows how to achieve his goals, and he is insane enough to pay whatever price for it. Bosch himself admits the NTF is an organization of fools driven by their hatred against Vasudans. This is
not Bosch's motivation. The NTF is merely a tool for him, using the insecurity and hatred of his "followers" to serve his plans.
The monologues give hints, hints about the truth behind the mystery that is the Shivans, hints about what will happen, hints about what had happened.
They also portray the irony, that he, seen as a monster by the people, may in fact be the only one who can save the human race.