Entheogens are defined as materials that cause "ego-dissolving" from the Greek – entheos -- for "realizing the divine within." Whereas often the modern Western citizen has chosen to use these materials in some profane way, traditionally entheogens are used in some ritual context. They had a purpose – to facilitate healing, either in understanding or health. Entheogens are materials for eliciting an ego-dissolving state. Psychedelics dissolve boundaries – this is what they do – they dissolve all cultural programming. Therefore the most successful of entheogenic or psychedelic experiences are those that incorporate this understanding. These materials allow the veil of perception to be peeled back, for a bigger picture look inside, what Aldous Huxley once called the doors of perception.