According to Wikipedia, in 1961 the Unitarian Universalist Association (UUA) was formed through the consolidation of the American Unitarian Association (AUA), established in 1825, and the Universalist Church of America (UCA), established in 1793. The UUA’s headquarter is in Boston, Massachusetts, and serves churches mostly in the United States.
This is how UU’s website describes its symbol of the flaming chalice:
“A flame within a chalice (a cup with a stem and foot) is a primary symbol of the Unitarian Universalist faith tradition. Many of our congregations kindle a flaming chalice in gatherings and worships and feature the chalice symbol prominently.
Hans Deutsch, an Austrian artist, first brought together the chalice and the flame as a Unitarian symbol during his work with the Unitarian Service Committee during World War II. To Deutsch, the image had connotations of sacrifice and love. Unitarian Universalists today have many different interpretations of the flaming chalice, including the light of reason, the warmth of community, and the flame of hope.”
UU practices a creedless and non-dogmatic approach to religion. An attitude toward each congregant’s beliefs and tradition is one of tolerance and acceptance. They reject a belief in the Trinity as God the Father, Son, and Holy Ghost. Instead they worship a unitary notion of God. They see believers will be eventually reconciled to God. So they reject preaching about hellfire and damnation. UU celebrates worship services on Sundays with a sermon and the signing of hymns.
Some of their sacred texts are from the Jewish and Christian traditions. However they look at additional sources for further religious and moral inspiration. These are drawn from the scriptures of the world’s religions. By so doing they recognize the wisdom teachings not only of the Bible’s New and Old Testaments, but also works like Dhammapada, or Tao Te-Ching, and other philosophers, scientists, poets, and sages.
On the pages of these writings UU trusts that their congregants to use reason and come to conclusions that speak to them. These goals they see necessary, since their membership, whether atheists, agnostics, Christians, Jews, Chinese, Hindus, Muslims, believers, and non-believers alike, would find meaning on their quest in seeking the truth.
1) Sermon “The Basics of Unitarian Universalism” – Rev. Aaron White, First Unitarian Church of Dallas 24:51
2) The Rise and Fall of Unitarianism in America 17:20
3) Interview with a Unitarian Universalist 53:21