I am assuming that whoever is reading this right now has had a dream before. Am I right? But have you ever had a dream with a person in it whom you have never seen before in your life? It may seem that way, but it is impossible. It is believed that the human brain is incapable of “creating” a new face. Every person you dream of has been someone you have either known personally or merely came across looking through your friend’s Facebook photos. Even those whom you do not consciously notice but still look at as you pass by may be an implanted image in your brain and show up later when you are dreaming.
Sigmund Freud is most famous for his definition and study of dreams. He taught about the unconscious and based it on repression and how some ideas and events in one’s life are repressed and brought up later in life. Freud believed in a cycle where these repressed ideas remain in the mind while removed from consciousness. They reappear and become a part of our consciousness only at specific times, for example, in our dreams.