Beliefs vs Values

How sturdy and reliable are beliefs?
If beliefs change in time, then at any one time their reliability is questionable.
Values on the other hand do not change in time. If we look at values such as compassion, justice, honesty and integrity, they do not change in time. Hence a life driven by values is by far more reliable than that driven by belief. However if values shape your beliefs then you have a double edged sword that helps one implement and practice values more readily on several levels*.