Aberration – undue emphasis on a fringe doctrine, or a group of persons holding that doctrine that has not separated itself from the Church, frequently resulting in a potentially dangerous leadership structure. This is often an anti-conformist group, sometimes led by a charismatic leader, but as often by some principle of greater strictness, more single minded dedication, or more intense renunciation of the world and its attractions. Often has as its main principle some aspect of orthodox faith that is being neglected. The question concerning the seriousness of the fringe doctrine will be answered by the fact that the group has chosen to stay in the Church (i.e. within the boundaries of the “faith once for all delivered unto the saints”).