Wicca is unique in that it has no dogmas, docterines or set of rules. This can be confusing for new practitioners, because Wiccan practices are derived from within, are personal and individual and are not mandated by any one person, hierarchy, or "Bible". Many people brought up in an organized religion are not used to such an open and free belief system. It takes time to become comfortable in developing your religious practices from your personal experiences and knowledge, but therein lies the beauty of Wicca.
Individuality is an honored trait for Wiccans, therefore, Wicca is not a "cohesive" religion. One can practice either with a coven or as a solitary, and they can worship in their own individual way. Also, some people who belong to covens may branch out and form their own coven. This is totally acceptable and it allows for a greater sharing of beliefs and of the establishment of new ideas and practices. Although Wiccan practices are unique to the individual or coven, most Wiccans have more in common with other Wiccans than they do differences.
That said, of course Witches wish to harm those around them as little as possible. So, a Witch will try to live with as little negative impact on the environment as they can practically manage. They will also try to help others out, whether it's by volunteering for charity or meditating for world peace. This varies for everyone, and I think it is petty to get into arguments and one-upmanship over it. Don't drive a car? That's excellent, but some people have to drive to get to their jobs, and maybe they use some of their money to help the environment in other ways.
The Golden Rule
"Do unto others as you would have them do unto you" is another guideline used to further reinforce The Wiccan Rede and The Law of Three. The Golden Rule ensures that a person thinks about and takes responsibility for their actions and the outcomes or consequences of such actions. Thus, the individual is entirely responsible for their actions and cannot blame their mistakes on anything but themselves. You will never hear a Wiccan say "The Devil made me do it"! Wiccans do not believe in the Devil or Satan!
The belief in Light & Dark
Most Wiccans acknowledge that there is "light" and "dark" to the universe. This polarity (light vs. dark) is part of the natural order of things and is not necessarily "evil" or "bad". What is considered to be "light" are those events or processes which are beneficial, such as the birth of a healthy baby. Whereas, things that are "dark" are events that might be harmful. As an example, death is "dark" but it is part of the natural process of life and is not feared by Wiccans, but natural and accepted.
Evil
Evil is different from "dark" when it is used to describe human actions. When a person commits a certain action for personal gain, or to serve a personal end, it is considered "evil". If a volcano erupts and destroys a village, this process would be thought of as "dark" but there was no evil or malicious intent on the part of the volcano. However, when an individual commits murder, for instance, this individual set out to harm another person, therefore, their action can be described as "evil". It is not only the act, but the malicious intent that differentiates "evil" from "dark"
