river, not rock
"Unitarian Universalism is not a rock to hold onto. It is a river to swim in.
If you want a set of beliefs to hold onto, if you want rules to guide your life in all situations, if you want a foundation for a spiritual fortress, you will probably be disappointed with us.
However, if you want to dive into the river and explore, if you think that what you experience and what you do is more important than what you believe, if you want to be with people who engage in this world to promote well being for all, we may have something to offer.
Life itself is more like a river than a rock. Life is in flux, it changes, twists and turns, ebbs and flows. When a river encounters a boulder, the boulder may win for a while. But eventually, even the most massive stone is worn away by the currents of time. Unitarian Universalism is about learning to swim in the river rather than climbing out of it onto a rock."
--the Rev. Mr. Doug Kraft, of the UU Society of Sacramento.