The psychologist Sigmund Freud spent much of his life trying to understand how the human psyche functions. Famously sorting the human consciousness into the it, the ego and the superego. He was particularly interested in the instinct for sex and satisfaction of lust, a phenomenon he called the libido. Many of his theories were highly disputable, such as his theory on infantile sexuality and the societal influence on sexuality. Learn all about the father of psychoanalysis on ITS HISTORY!