We can no longer speak of wisdom. Only the products of its decay remain. There are two: one is the rumour about the true things (a sort of theological whispered intelligence dealing with matters discredited and obsolete); the other product of this diathesis is folly – which, to be sure, has utterly squandered the substance of wisdom, but preserves its attractiveness and assurance, which rumour invariably lacks.

Walter Benjamin, 'Max Brod's Book on Kafka' in Illuminations (Pimlico, 1999) p. 142