There has to be a balance of good and evil in the universe for either to have any meaning to us.
That old books like the bible are still relatable to people today tells me that nothing in our species' nature has changed in almost 2000 years. We may have better laws (at least in some parts of the world) and bitchin' fast internet, but we are no more good or evil as a whole now than we were then.
As for Nature vs. Nurture... I'd say it's a bit of both. When you get right down to it, mental states are just physical states - chemicals in our brains altering our perceptions etc. Some will have more of those chemicals which leave them predisposed to violent or bad behaviour than others.
(*awaits wrath of people who actually know what they're talking about*)
That old books like the bible are still relatable to people today tells me that nothing in our species' nature has changed in almost 2000 years. We may have better laws (at least in some parts of the world) and bitchin' fast internet, but we are no more good or evil as a whole now than we were then.
As for Nature vs. Nurture... I'd say it's a bit of both. When you get right down to it, mental states are just physical states - chemicals in our brains altering our perceptions etc. Some will have more of those chemicals which leave them predisposed to violent or bad behaviour than others.
(*awaits wrath of people who actually know what they're talking about*)