The sad truth is that man's real life consists of a complex of inexorable opposites - day and night, birth and death, happiness and misery, good and evil. We are not even sure that one will prevail against the other, that good will overcome evil, or joy defeat pain. Life is a battleground. It always has been and always will be; and if it were not so, existence would come to an end.
Carl JungThe collective unconscious contains the whole spiritual heritage of mankind's evolution born anew in the brain structure of every individual.
Carl JungThe unconscious is not just evil by nature, it is also the source of the highest good: not only dark but also light, not only bestial, semihuman, and demonic but superhuman, spiritual, and, in the classical sense of the word, "divine."
Carl Jung