The author summarizes his studies during the past several years of the relationships among psychiatric entities as they involve ego functions, quantities of libido, and the effect of drugs. His data are nonquantitative, accumulated from observations of a relatively small number of patients in psychoanalysis or psychotherapy plus some brief observations of other patients. The book also contains an epilogue "On Human Happiness" and an appendix on "The Pharmaceutic Agents."
The main body of the book contains his speculations regarding the quantity of libido which influences ego functions as estimated by psychological methods. He considers that increases and decreases of libidinal energy producing corresponding symptoms can be influenced by the use of tranquilizing and energizing drugs.
The author uses the classical Freudian theoretical model on which he diffidently imposes pharmacological theory and operations. The result is a series of entrancing speculations which cannot be lightly dismissed because of the lack