Sigmund Freud was a psychoanalyst. He started off studying medicine, then philosophy, then studied the brain. He lived from 1856 to 1939. Very little was known about the human conscious during that time. He used to use hypnosis on patients, but abandoned that shortly after starting it. This guy was a little messed up in the head. He always thought of weird stuff that no one else would think of. He also liked sexual theories. This guy smoked tobacco all the time, even with his prosthetic jaw. He always was a suck-up to Anna Freud, his daughter. He thought that his theories were the only right ones and rejected any members that disagreed. Oh yeah, this guy loved drugs. He did cocaine, and his way of dying was an overdose of morphine.
Sigmund Freud is important to psychology because he basically started psychoanalysis. He also had many theories, such as the seduction theory and the unconscious mind. He also came up with the Id, the ego, and the superego. He also theorized about dreams. This time influenced Freud because no one knew about mental illnesses at the time. Plus, I think some of his theories originated from him being on drugs and I think drugs were legal back then. Also, no one knew much about the human mind and why people do bad things to other people.