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Table of contents
THE FIRST WOMAN, AND HER ANTEDILUVIAN DESCENDANTS-1
THE FIRST WOMAN, AND HER ANTEDILUVIAN DESCENDANTS-2
THE FIRST WOMAN, AND HER ANTEDILUVIAN DESCENDANTS-3
THE FIRST WOMAN, AND HER ANTEDILUVIAN DESCENDANTS-4
THE FIRST WOMAN, AND HER ANTEDILUVIAN DESCENDANTS-5
THE FIRST WOMAN, AND HER ANTEDILUVIAN DESCENDANTS-6
THE FIRST WOMAN, AND HER ANTEDILUVIAN DESCENDANTS-7
DEGREES OF SENTIMENTAL ATTACHMENT AT DIFFERENT PERIODS-8
A VIEW OF MATRIMONY IN THREE DIFFERENT LIGHTS
FEMALE FRIENDSHIP
A LETTER TO A NEW MARRIED MAN
ITALIAN DEBAUCHERY
CUSTOM IN THE MOGUL EMPIRE
ANECDOTE OF CAESAR
POWER OF PHILTRES AND CHARMS
LAPLAND AND GREENLAND LADY
ART OF DETERMINING THE PRECISE FIGURE, THE DEGREE OF BEAUTY,THE HABITS, AND THE AGE, OF WOMEN, NOTWITHSTANDING THE AIDS AND DISGUISES OF DRESS
THE IDEAL OF FEMALE BEAUTY; OR A DESCRIPTION OF THE FAMOUS STATUE OF THE VENUS DE MEDICI
AN ESSAY ON MATRIMONY-1
AN ESSAY ON MATRIMONY-2
Three Contributions to the Theory of Sex. PREFACE
THE SEXUAL ABERRATIONS-1.1
DEVIATION IN REFERENCE TO THE SEXUAL AIM-1.2
GENERAL STATEMENTS APPLICABLE TO ALL PERVERSIONS-1.3
PARTIAL IMPULSES AND EROGENOUS ZONES-1.4
THE INFANTILE SEXUALITY-2.1
THE SEXUAL AIM OF THE INFANTILE SEXUALITY-2.2
THE INFANTILE SEXUAL INVESTIGATION-2.3
THE SOURCES OF THE INFANTILE SEXUALITY-2.4
THE TRANSFORMATION OF PUBERTY-3
THE THEORY OF THE LIBIDO-3.1
SUMMARY-3.2
SUMMARY-3.3
INDEX-1
INDEX-2
INDEX-3

THE THEORY OF THE LIBIDO 

 

These assumptions concerning the chemical basis of the sexual excitement 

are in full accord with the auxiliary conception which we formed for the 

purpose of mastering the psychic manifestations of the sexual life. We 

have determined the concept of _libido_ as that of a force of variable 

quantity which has the capacity of measuring processes and 

transformations in the spheres of sexual excitement. This libido we 

distinguished from the energy which is to be generally adjudged to the 

psychic processes with reference to its special origin and thus we 

attribute to it also a qualitative character. In separating libidinous 

from other psychic energy we give expression to the assumption that the 

sexual processes of the organism are differentiated from the nutritional 

processes through a special chemism. The analyses of perversions and 

psychoneuroses have taught us that this sexual excitement is furnished 

not only from the so-called sexual parts alone but from all organs of 

the body. We thus formulate for ourselves the concept of a 

libido-quantum whose psychic representative we designate as the 

ego-libido; the production, increase, distribution and displacement of 

this ego-libido will offer the possible explanation for the observed 

psycho-sexual phenomena. 

 

But this ego-libido becomes conveniently accessible to psychoanalytic 

study only when the psychic energy is employed on sexual objects, that 

is when it becomes object libido. Then we see it as it concentrates and 

fixes itself on objects, or as it leaves those objects and passes over 

to others from which positions it directs the individual's sexual 

activity, that is, it leads to partial and temporary extinction of the 

libido. Psychoanalysis of the so-called transference neuroses (hysteria 

and compulsion neurosis) offers us here a reliable insight. 

 

Concerning the fates of the object libido we also state that it is 

withdrawn from the object, that it is preserved floating in special 

states of tension and is finally taken back into the ego, so that it 

again becomes ego-libido. In contradistinction to the object-libido we 

also call the ego-libido narcissistic libido. From psychoanalysis we 

look over the boundary which we are not permitted to pass into the 

activity of the narcissistic libido and thus form an idea of the 

relations between the two. The narcissistic or ego-libido appears to us 

as the great reservoir from which the energy for the investment of the 

object is sent out and into which it is drawn back again, while the 

narcissistic libido investment of the ego appears to us as the realized 


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