The Tribes of Christianity – Encyclopaedia Avalonia XIV …
Unitarians, as their name suggests, believe in one thing and one thing only – Unity.
They thus believe that it doesn’t really matter what they believe as long as they all believe the same thing.
Unhappily this rather vague doctrine has proved somewhat too shallow a basis for cementing congregational loyalty … so their flock has gradually fallen by the wayside, leaving just one member. The Unitarian Church – now called the Church of the Unitarian – has thus perfected its doctrinal expression and is finally assured of a stable future.
 Many have become Trinitarians – i.e. ex-Unitarians who are in three minds about it.