Do not harm anyone physically!
Do not harm anyone mentally!
Do not harm anyone financially!
These three simple rules cover everything from theft to bullying. They could be open to interpretation of course, especially number 2. They are just a guideline for how to treat others. I'm sure there are many situations which would require a more complex interpretation of the above rules. The point I'm making is, it's very simple to be a good person. It's just common sense. You know it's bad to hurt someone physically because you wouldn't want to be hurt yourself. You know it's wrong to hurt someone mentally because you wouldn't want to be hurt that way yourself. You know it's wrong to steal because you wouldn't want to be stolen from yourself. Why do I need religion to tell me this? Quite simply, I don't!