is to fall into superstition. Cf. Matthew 23:16–22" (para. #2111) Agnosticism and atheism The terms atheist (lack of belief in any gods) and agnostic (belief in the unknowability of the existence of gods), though specifically contrary to theistic (e.g. Christian, Jewish, and Muslim) religious teachings, do not by definition mean the opposite of religious. There are religions (including Buddhism, Taoism, and Hinduism), in fact, that classify some of their followers as agnostic, atheistic, or nontheistic. The true opposite of religious is the word irreligious. Irreligion describes an absence of any religion; antireligion describes an active opposition or aversion toward religions in general. Interfaith cooperation Because religion continues to be recognized in Western thought as a universal impulse, many religious practitioners have aimed to band together in interfaith dialogue, cooperation, and religious peacebuilding. The first major dialogue was the Parliament of the World's Religions at the 1893 Chicago World's Fair, which affirmed universal values and recognition of the diversity of practices among different cultures. The 20th century has been especially fruitful in use of interfaith dialogue as a means of solving ethnic, political, or even religious conflict, with Christian–Jewish reconciliation representing a complete reverse in the attitudes of many Christian communities towards Jews. Recent interfaith initiatives include A Common Word, launched in 2007 and focused on bringing Muslim and Christian leaders together, the "C1 World Dialogue", the Common Ground initiative between Islam and Buddhism, and a United Nations sponsored "World Interfaith Harmony Week". Culture Culture and religion have usually been seen as closely related. Paul Tillich looked at religion as the soul of culture and culture as the form or framework of religion. In his own words: Religion as ultimate concern is the meaning-giving substance of culture, and culture is the totality of forms in which the basic concern of religion expresses itself. In abbreviation: religion is the substance of culture, culture is the form of religion. Such a consideration definitely prevents the establishment of a dualism of religion and culture. Every religious act, not only in organized religion, but also in the most intimate movement of the soul, is culturally formed. Ernst Troeltsch, similarly, looked at culture as the soil of religion and thought that, therefore, transplanting a religion from its original culture to a foreign culture would actually kill it in the same manner that transplanting a plant from its natural soil to an alien soil would kill it.