Unitarian Universalists believe that personal experience, conscience, and reason should be the final authorities in religion. There is no creed with which you must agree. Religious insight may come from a book, a person, or an institution, but religious authority does not. Religious authority comes from within ourselves. Religious insights are tested in our individual hearts and minds. Ours is a free faith.
It is a liberal religion born of Jewish and Christian traditions, but religious wisdom is ever changing. Human understanding of life and death, the world and its mysteries, is never final. People should think for themselves. We differ in opinions and lifestyles, and those differences generally should be honored. Everyone has worth. Ethical living is the supreme witness of religion. Our relationships with one another, with diverse peoples, races, and nations, should be governed by justice, equity, and compassion.
Some good resources for understanding Unitarian Universalism:
We Are Unitarian Universalists
Welcome to a Community of Truth, Service, Holiness and Love
Unitarian Views of the Bible
Unitarian Views of Jesus
Unitarian Views of God
Unitarian Views of the Church
Can We Find a Home Here? Answering Questions of Interfaith Couples