What Franz Kafka had to be so clear and simple about was that nothing is clear and simple. On his death bed he said of a vase of flowers that they were like him: simultaneously alive and dead. All demarcations are shimmeringly blurred. Some powerful sets of opposites absolutely do not, as Heraclitus said, cooperate. They fight. They tip over the balance of every certainty. We can, Kafka said, easily believe any truth and its negative at the same time.
Kafka and Existentialism // Guy Davenport