I do not know. I'm not sure if I even believe in good and evil. If there is something that I find similar, it is in how a person treats others. A person who is a wonderful conversationalist, donates to charity, has brilliant teeth, is funny and intelligent... if that person behaves that way to you and then is rude to the waiter? I don't think that's a nice person. Similarly, I think that those who treat others differently according to their 'station' in life are not nice people, either. (The definition of 'people', in my case, pretty much encompasses all existence, but you use whatever interpretation you prefer.)
In terms of behavior, I can think of no better form of goodness than kindness and compassion. Even if the person acts gruffly, their goodness shows when they perform an act of kindness, or express compassion. (Especially through works.)