Freud defies himself as a non-philosopher, but has a great contribution to modern philosophy. As a student he hesitates to write a philosophy, but writes medicine as more practical.According to Freud, the psychoanalysis is a coup in the understanding of man (like Copernicus, Darwin). Psychoanalysis is a method that replaces drug treatment (Freud finds that drugs are not effective in treating psychiatric illness). ![Philosophy-books.jpg](https://cdn.steemitimages.com/DQmbBjHFTzGv2Ct5dkUtMPZffQMPdD5sTRPdEJWvGZoMV6L/Philosophy-books.jpg) [image source](https://studybreaks.com/college/in-defense-of-uselessness-why-i-am-a-philosophy-major/) Key words: "Interpretation of dreams", "Introduction to psychoanalysis", "Totem and taboo", "A memory of Leonardo's childhood", "Insight and its attitude towards the unconscious".For Freud the unconscious is decisive for man.Psychoanalysis is initially known as a method of treating mentally ill patients. Freud offers not only a new medical method but also a review of the fundamental human structure. Freud's Ideas. Consciousness does not exhaust the psychological life of man - a fundamental idea from which Freud begins. It is only a part. "Mental processes are essentially unconscious. Only individual elements of the psychic life are conscious. "The new here is in the interpretation of the unconscious. According to Freud, the unconscious is formed by impulses, "which can be defined as sexual, both narrowly and in a broad sense." The drive is an energy that is largely sexual. Freud uses the term "libido." The unconscious is revealed by indirect ways, and the role of psychoanalysis is to seek through indirect traces (manifestations, symbols) unconscious through the analysis of dreams, mistakes in language and other similar phenomena.