Say what you will about the sweet miracle of unquestioning faith, I consider a capacity for it terrifying and absolutely vile.

Vonnegut is rejecting the sentimental praise often given to “unquestioning faith.” By calling it a “sweet miracle,” he acknowledges its emotional comfort and cultural prestige, then sharply reverses course: the very ability to believe without scrutiny strikes him as morally dangerous. “Terrifying” points to what such faith can enable—obedience, cruelty, and the suspension of personal responsibility—while “absolutely vile” frames it as an ethical failure rather than a private preference. The line fits Vonnegut’s recurring humanist skepticism toward dogma: he values compassion and clear-eyed judgment over certainty purchased at the cost of critical thought.