In his autobiographical novel „John Barleycorn“ published in 1913, Jack London explained how dangerous and bad alcohol is. This is the novel that speaks about his literary alter ego's life, pointing out that his life path was always connected with the alcohol. He claims that he didn't even like alcohol, at the beginning, as a young man, and that he was drinking it so he would be accepted by his friends. He was physically strong, so he could drink a lot, and he became popular because of that, but as the years passed by, he got used to drinking so much, that he couldn't stop. His opinion is that the alcohol was one of the main causes of depression in his later life and one of the main helpers of so called „white logic“: dreadful and nihilistic intellectual pessimism...