To believe that a fence of taboo should be built around some formulation is to believe that a person can become God (or his exclusive private secretary) and speak for .him. No authority, including the authority of individual conviction, is rightly exempt from discussion and criticism. The faith of the free, if it is to escape the tyranny of the arbitrary, must be available to all, testable by all (and not merely by an elite), valid for all. It is something that is intelligible and justifiable.
James Luther Adams, “A Faith for the Free,” The Prophethood of All Believers