John Sulliva's attitude towards new religious movements is secular (although he is a pastor of the Jesuits), it is inclusive. He first examined how to see today's new religious movements, how they responded in the past, and why. He studied the original definition of the word "cult" and its contemporary derivatives, and how it affects these new religious movements. By reviewing multiple opinions about the new religious movements, observing the historical, psychological, social, legal and theological backgrounds of these religions and attracting new believers, he is more concerned with these new religions We advocate an open attitude,
Some researchers criticized the use of the term "destructive cult" and wrote it to explain groups that are not necessarily harmful for themselves or others. In his book 'Understanding the New Religious Movement', John Sulliva wrote that the word is too general. Sulliva believes that the People's Temple is "a destructive cult paradigm", suggesting that others who use that word also commit suicide on a large scale. The writer misunderstood the cult: in search of objectivity in controversial areas, the writer Julius Rubin complains that the term has been used to trust particular groups in the public opinion court. Lorne L. Dawson, author of Cults in Context, said in his work that the Unification Church "is not proven to be violent or turbulent" but as a destructive cult by "rebels" It says that it is explained.
Sulliva is a professor of religious studies at a compassionate school of the Detroit University, a Catholic priest and Jesus president. He insisted on a reconciliation approach to a new dialogue movement and claimed that "dialogue is more useful than dia」. " He claims that NRM members are temporary for most people and NRM functions as a temporary safe haven for young people and they can stabilize their lives . He criticized the anti-cult movement and commented, "The neutral position of social science is often interpreted as supporting NRM."