I like the way the characters were portrayed in The Undiscovered Country
. Their entire world, their entire way of thinking had just been turned upside-down. They had their own run-ins with Klingons that didn't turn out so well and Federation propaganda on top of it (being taught that the Klingons were the enemy).
They were very human in the film, thinking one-way then being forced to examine and change their thoughts regarding the Klingons. It played out much like episodes Arena
and The Devil in the Dark
Their wisdom finally caught up to their emotions.