Yet though you never feel its force or its absence, nothing kills or promotes quicker than the word-of-mouth. The gross example is of course the best-seller, but the same mechanism is at work in the most off-track circle. Its most frequent effect is that of artistic rehabilitation. In my time I have seen Mozart and Henry James lifted from the status of empty, frivolous virtuosos to that of great and deep geniuses; El Greco rescued from a negligible place as a baroque artist; Berlioz raised from grudging toleration to the highest eminence; Italian opera recognized as permissible to attend; and the Cubists credited with the sole seminal power in our century. All these conclusions began by being ideas in solitary minds, lone dissenters from the crowd. It follows that what you think — what you decide and keep firmly in mind — is of the utmost importance. Before you know it, your conviction comes out in attitudes and words, which in turn start echoes and arguments distant from your own corner, and after that anything may ensue.
— Jacques Barzun, The Use and Abuse of Art, 1975