...  To a faith with the power to transform lives and change the world.   ...  To a faith that can sustain and enrich the next chapter of your life.

Some well-known UUs include:

Ralph Waldo Emerson
Clara Barton
John and Abigail Adams
John Quincy Adams
Susan B. Anthony
Pete Seeger
P.T. Barnum
Kurt Vonnegut
Louisa May Alcott
Isaac Newton
Eliot Richardson
Whitney Young
William Howard Taft

For more about these and other famous UUs, check the list in Wikipedia.

Or read more about UU history on the UUA (Unitarian Universalist Association) site.