According to Jung, collective unconscious is a common set of ideas, feelings, images, and symbols that we inherit from our ancestors, the whole human race, and even animal ancestors from the distant past.
Collective unconscious is a central concept of Jungian psychology which refers to the part of a person's unconscious that he shares with every other human being and which is inherited from previous generations in the distant past. Jung had been impressed by the similarities he saw between the symbolism of dreams and the artistic imagery of cultures in widely separated times and places. Most non-Jungians regard the concept as mystical.