He resigned from the International Psychoanalytic Society in 1914 after breaking with Freud, and differentiated between introverted and extroverted attitudes in Psychological Types.  
One of his last works, Mysterium Coniunctionis, dealt with alchemy and symbolism.  He worked with Eugen Bleuler at the Burgholzli Asylum, applying word association tests to find negative, emotional, repressed content he called complexes.   He resigned from the International Psychoanalytic Society in 1914 after breaking with Freud, and differentiated between introverted and extroverted attitudes in Psychological Types.  FTP, name this psychoanalyst who developed the ideas of animus and anima and the collective unconscious.
One of his last works, Mysterium Coniunctionis, dealt with alchemy and symbolism.  
Carl Gustav Jung