Today Zoroastrianism can be divided in two main schools of thought: reformists and traditionalists. Traditionalists are mostly Parsis and accept, beside the Gathas and Avesta, also the Middle Persian literature and like the reformists mostly developed in their modern form from 19th century developments. They generally do not allow conversion to the faith and, as such, for someone to be a Zoroastrian they must be born of Zoroastrian parents. Some traditionalists recognize the children of mixed marriages as Zoroastrians, though usually only if the father is a born Zoroastrian. Reformists tend to advocate a "return" to the Gathas, the universal nature of the faith, a decrease in ritualization, and an emphasis on the faith as philosophy rather than religion. Not all Zoroastrians identify with either school and notable examples are getting traction including Neo-Zoroastrians/Revivalists, which are usually reinterpretations of Zoroastrianism appealing towards Western concerns, and centering the idea of Zoroastrianism as a living religion and advocate the revival and maintenance of old rituals and prayers while supporting ethical and social progressive reforms. Both of these latter schools tend to center the Gathas without outright rejecting other texts except the Vendidad. The Ilm-e-Khshnoom and the Pundol Group are Zoroastrian mystical schools of thought popular among a small minority of the Parsi community inspired mostly by 19th-century theosophy and typified by a spiritual ethnocentric mentality.