Good and Evil

I don't believe in good and evil in a sense that one thing or action must be either good or evil. I think we all have a little good in us, but we also all have our evil moments. Also, one thing could be considered evil by some, but good by others. The most clear example of this for me is the story of Robin Hood. He stole from the rich and gave to the poor. Generally we consider stealing evil but giving to others good. So which is it? I'm sure the people he stole from thought he was horribly evil, but the ones recieving his gifts thought he was incredibly good. I don't think there is any cut and dry answer to whether something is good or evil. For this reason, I don't believe one can conquer another. Good cannot win over evil if there are people on both sides. I think there will be always good things and there will always be evil things.