...the greater is the wisdom and compassion, when they are "conquered"?
I recall a sutta which spoke of how anger becomes wisdom and desire become compassion, when their true nature is seen through insight (my recollection - perhaps someone has a ready reference?).
I also recall Ajahn Chah when asked how it happened that he was such an enlightened monk, replied "Because I had such great defilements." Turns out he was an extremely lustful young monk. And apparently once after an extended retreat to tackle just this problem, when a young and fully clothed village girl brought him some dana, he got aroused from just seeing her feet (again my recollection may be dodgy, but the point stands, I think).
So those of us who are prone to anger and desire (anyone?
) we can rejoice in that we have great fuel for wisdom and compassion. I also recall a Rinzai Zen teacher Myokyo-Ni (of Zen Centre in London) write that the Buddha-nature is passions and passions are the Buddha-nature (when seen for what they truly are).
I see all this not as a license to indulge anger and desire of course (both Ajahn Chah and Myokyo-Ni are explicit about that) but to redeem them as misunderstanding or a misdirected energy, rather than thoroughly bad and rejoice in the energy that fuels them, especially as we begin to see the source of this misdirection.
PS If the mods feel it more appropriate, please move this topic to the Dhammic Free-for-all forum.