Complex sentence: He discussed this subject in the correspondence with Princess Elisabeth of Bohemia, and as a result wrote his work "The Passions of the Soul", that contains a study of the psychosomatic relations, with an emphasis on emotions or passions.
Split into simpler sentences: He discussed this subject in the correspondence with Princess Elisabeth of Bohemia, and as a result wrote his work "The Passions of the Soul". This work contains a study of the psychosomatic relations, with an emphasis on emotions or passions.