The unconscious is basically the foundation of Psychology, which is due in large part to Sigmund Freud. Sigmund Freud is synonymous with psychology. Every introduction to Psychology book must present him and his ideas as they were extremely important in the birth of psychology as a science. Freud’s theories are both complex and extensive, however, his fundamental idea, to which all others extended, was that of the unconscious. Freud’s view is that the human mind has three lev