The role of a critic

To function as an evangelist, the critic needs, above all else, to write well. A badly written book review is worse than a badly written political speech or greeting card or poem; a badly written review is self-canceling, like a barber with a terrible haircut. The best way to establish critical authority is to demonstrate, in your own prose, a vitality at least equivalent to that of the book you’re writing about. There are other ways to do it, but that’s the most immediately convincing.

There is something important and meaningful in the quote above.