All information in Wikipedia needs to be verifiable, that is, attributable to reliable, published sources. Wikipedia is not the place to publish original research; articles may not contain any new analysis or conclusion beyond what the individual sources say. Likewise, all content should be encyclopedic. Material that you wouldn't find in an encyclopedia, an almanac, or a gazetteer, is probably inappropriate for Wikipedia (see What Wikipedia is not), although it might be suitable for some of our fellow Wikimedia projects.
All Wikipedia articles must be written from a neutral point of view. Articles must not take sides, but instead should describe—accurately and without bias—all the significant viewpoints on the topic published in reliable sources, giving due weight with respect to their prominence. Argumentation or advocacy does not belong in Wikipedia articles.
Wikipedia is free content that anyone can use, edit, and distribute