The father of Psychoanaylsis
Freud lived from 1856 to 1939 and worked heavily with the psychoanalytical approach to psychology. Freud made a huge impact on psychology when researching the "Second Mind". Freud believed that all of your decisions and actions are based off of your unconscious mind. He thought that through your unconscious motives he could learn why we do the things that we do. He worked immensely with the Oedipus Complex and dream analysis throughout his career. In 1900, his major work 'The Interpretation of Dreams' was published, this book analysed dreams in terms of unconscious desires and experiences. Freud also worked with free Association hoping to find out what the mind thinks so that you gain self-insight and he could learn what your mind through unconscious thoughts and experiences. In 1933 Nazi's publicly burned many of Freud's books so he picked up his wife and daughter to move away and keep them safe. I believe that the cruelty he saw from the Nazi's brought him to believe that the way you are raised has something to do with how you react to things which is why Freud often blamed the parents for their children's behavior.
The Oedipus complex is the complex of emotions aroused in a young child, typically around the age of four, by an unconscious sexual desire for the parent of the opposite sex and a wish to exclude the parent of the same sex. Now a days we know that many of our thoughts are do to our unconscious mind and we don't question it, it is just something that we have come to know. This is due to Freud and other psychologists who work along with him. We also have many dream dictionaries now, in paper form and online and these all started with Freud's thought that dreams have a hidden meaning. What is the one thing you picturing when you think of psychology? a person laying on a chair talking about their feelings and the psychologist saying "and how does that make you feel?" That all started with Freud's concept of Free Association, he listened and took notes while you shared all that came to mind.