"Brief an den Vater is the name usually given to the letter Franz Kafka wrote to his father Hermann in November 1919, indicting him for his emotionally abusive and hypocritical behavior towards him. Kafka hoped the letter would bridge the growing gap between him and his father, though in the letter he provides a sharp criticism of both ... According to Max Brod, Kafka actually gave the letter to his mother to hand on to his father. His mother never delivered the letter but returned it to her son"--Wikipedia.
