Brill, in honoring Sigmund Freud, gives a short biography and defines some of Freud's technical terms, not for the psychoanalyst familiar with the subject but for the physician who is uninformed about Freud's psychology and is often misinformed about the meaning of special terms like ego libido, narcissistic libido, latency period, fixation, etc.

In order to give some insight into unconscious mechanisms and as a contribution to Freud's statement that, 'Delusional jealousy is an acidulated homosexuality and justly belongs to the classical forms of paranoia', Brill presents two case histories, the one of a paranoid schizophrenic with homosexual