Freud's discovery of an emotional basis for mental illness led him to pursue the emotional basis of human behavior in general. This pursuit led him to undertake observational studies of dreams (1900), everyday mistakes (1901), sexuality (1905b), character formation (1908, 1931), jokes (1905a), and the origin of guilt (1913). Volume 2 of Freud and Modern Psychology examines the texts of each of these major writings in general psychology, continuing to explore the contradiction between Freud's observations about the power of emotions and his narrow the oretical formulations about human...