Hi Alex, I do not know Dr Berg and cannot comment on his authenticity; but no genuine initiate would label themselves the greatest living anything without the self-knowledge of the severe and dangerous imbalances this label exhibits about the self. Bardons work is purely experiential and practical, and cannot be practiced with any genuine success without a degree of purity of soul and intention that could not be present with such imbalances. If those in the aforementioned article do ring true from your personal experience it would be wise to reassess your contact with said group. Mark