Talent perceives differences; genius, unity.
Actors are steeped in a world of agents and where the next job is coming from and what are their expenses and what is the hotel like. You want to take them out of that world and dump them into another world, so that when you meet them on the screen they don't seem like the guy who was in two others movies that year.
I think that a good person can sometimes do wrong out of ignorance or weakness or wrong thinking, but when hard times come, the goodness wins out after all. And a bad person can often seem good and trustworthy for a long time, but when hard times come, the evil in him gets revealed.