21
" If the ego succeeds in protecting itself from a dangerous instinctual impulse, through, for instance, the process of repression, it has certainly inhibited and damaged the particular part of the id concerned; but it has at the same time given it some independence and has renounced some of its own sovereignty. This is inevitable from the nature of repression, which is, fundamentally, an attempt at flight. The repressed is now, as it were, an outlaw; it is excluded from the great organization of the ego and is subject only to the laws which govern the realm of the unconscious. If, now, the danger-situation changes so that the ego has no reason for fending off a new instinctual impulse analogous to the repressed one, the consequence of the restriction of the ego which has taken place will become manifest. The new impulse will run its course under an automatic influence—or, as I should prefer to say, under the influence of the compulsion to repeat. It will follow the same path as the earlier, repressed impulse, as though the danger-situation that had been overcome still existed. The fixating factor in repression, then, is the unconscious id's compulsion to repeat—a compulsion which in normal circumstances is only done away with by the freely mobile function of the ego. "
― Sigmund Freud , Inhibitions, Symptoms and Anxiety
25
" We have found that the sexual life of man, unlike that of most of the animals nearly related to him, does not make a steady advance from birth to maturity, but that, after an early efflorescence up till the fifth year, it undergoes a very decided interruption; and that it then starts on its course once more at puberty, taking up again the beginnings broken off in early childhood. This has led us to suppose that something momentous must have occurred in the vicissitudes of the human species which has left behind this interruption in the sexual development of the individual as a historical precipitate. This factor owes its pathogenic significance to the fact that the majority of the instinctual demands of this infantile sexuality are treated by the ego as dangers and fended off as such, so that the later sexual impulses of puberty, which in the natural course of things would be ego-syntonic, run the risk of succumbing to the attraction of their infantile prototypes and following them into repression. "
― Sigmund Freud , Inhibitions, Symptoms and Anxiety
32
" We have been able to explain some of them, such as the fear of being alone or in the dark or with strangers, as reactions to the danger of losing the object. Others, like the fear of small animals, thunderstorms, etc., might perhaps be accounted for as vestigial traces of the congenital preparedness to meet real dangers which is so strongly developed in other animals. In man, only that part of this archaic heritage is appropriate which has reference to the loss of the object. If childhood phobias become fixated and grow stronger and persist into later years, analysis shows that their content has become associated with instinctual demands and has come to stand for internal dangers as well. "
― Sigmund Freud , Inhibitions, Symptoms and Anxiety