The Pentacle
The Pentacle, consists of a circle enclosing a five pointed star (Pentagram). Wiccans see this symbol as a positive one. I see the pentacle as a symbol of life. To me the circle represents the many circular patterns in life, for example there is the life-death-rebirth cycle or the Wheel of the year.

Continuing the theme of the pentacle as a symbol of life, the four lower points represent the four traditional elements that make up matter- Earth, Air, Fire and Water, with the upper point representing spirit.

The pentacle and pentagram symbols have been abused at times by those who desire to harm rather than work for good. I guess this is no different from those who call themselves Satanists and invert the Christian crucifix as their symbol.