Quote from : Straight to Hell: 20th Century Suicides Book

Among [Applewhite's] other teachings was the classic cult specialty of developing disdain for anyone outside of the Heaven's Gate commune. Applewhite flattered his would-be alien flock that they were an elite elect far superior to the non-initiated humans whom he considered to be deluded zombies.[...]Applewhite effectively fed his paranoid persecution complex to his followers to ensure blind loyalty to the group and himself while fostering alienation from the mundane world. This paradoxical superior/fearful attitude towards “Them” (i.e., anyone who is not one of “Us”) is one of the simplest means of hooking even the most skeptical curiosity seeker into the solipsistic netherworld of a [mentally unbalanced] leader's insecure and threatened worldview.