Breastfeeding and Toilet Training Can Ruin You Sigmund Freud proposed that human children were born in a state of polymorphic perversity with a unfocused libidinal drive directed toward any object that could provide sexual satisfaction (Freud, 1952a). Until about the age of six, humans are able to satisfy these sexual needs through any part of their body. Freud identified three distinct and predictable stages for this first period of development, corresponding to the child's behavior towards parts of his body, i.e. the mouth, the anus and the genitals, called the oral, anal and phallic stages (Freud, 1952a; Santoro et al., 2005). Any unresolved sexual conflict carried through to the last two stages of psychosexual development, Latency and Genital, often leads to the development of neurosis (Freud, 1952a). Freud believed that adult neuroses were usually the result of the expression of infantile sexual desires and fantasies. Human personality (Psyche) and psychosexual stages The development of adult neurosis and the five stages of psychosexual development are closely intertwined with Freud's theory of the human psyche and are three parts: the Id, the Ego and the Superego (Freud, 1952c). The three-part nonsomatic structure of personality is the theoretical construct used by Freud to model and explain the interactions of the uncoordinated instinctual drives of the unconscious (id), conscience and moralization (superego), and conscious mediation between desires of the two (ego). The conflict between the basic desires of the id and the desire of the person's superego to conform to social norms by controlling or suppressing instinctive impulses is, according to Freud, the genesis of neurosis. Neurosis can manifest itself with hysteria, obsessiveness... in the midst of documents..., with the prescription of contraceptive means and with the order to find a partner for sex. Instead, he attributed the neurosis of a young woman, Dora, to her parents' manipulation and Dora's failure to abandon childhood masturbation. Berger (2014) also demonstrates through the analysis of numerous case studies that psychological problems, including sexual divergences, must be examined independently without the application of an overarching theory. Conclusion Although often quoted, perhaps incorrectly, as saying, "Sometimes a cigar is just a cigar," Freud spoke of early experiences of pleasure and the hedonistic nature of human beings in seeking fulfillment of the desires of the id. (Freud , 1952c). “But anyone who understands the human mind knows that almost nothing is more difficult for a man than to give up a pleasure once experienced” (Freud, 1953, p.. 145).