From the author: A short reflection on the voice and its significance in the development of the mental apparatus of the subject. “It is obvious that psychoanalysts, who deal mainly with the verbal messages of an adult, will have to undertake a more systematic study of the earliest, archaic forms communication in infancy, if they want to come to an understanding of adult communication, on the one hand, and the foundations of the thinking process, on the other.” R. Spitz “Psychoanalysis of Early Childhood” The quality of our lives directly depends on how we communicate with people and what kind of relationships we build with them. Whether we easily find a common language, whether we are capable of a long-term relationship that suits both parties - all this depends on the ability to conduct a dialogue and speak. And this ability is filled not only with words; intonation, speed of pronunciation, and any other features of the speaker’s voice are also of great importance. The roots of any relationship, or rather the ways of building them, are certainly determined by our primary experience, which we received in a dyad with our mother. And the mother’s voice leaves the greatest mark. In this article I want to draw your attention to the fundamental importance of the voice in the development of the mental apparatus. The baby is truly connected with his parents by the audiophonic communication system; voice communication as communication has been observed from the early stages of embryonic life, at the same time it plays a major role in the expression of emotions. From 1963 to 1966, a series of observations were carried out by the English psychoanalyst Woolf. During observations, it was revealed that in infants under three weeks of age there are four types of cry, structurally and functionally different from each other, these are: A cry of hunger; A cry of anger (for example, when some element of clothing causes discomfort to the baby); A cry of pain of external origin (moment when an injection is given); A cry in response to frustration (for example, a sudden cessation of feeding). All these cries are purely physiological reflexes. These four types of child cry have a temporal aspect, have a duration of frequent repetitions, and each cry has its own frequency spectrum. The most fundamental and archaic is the cry of hunger. And the most effective way to stop a baby from crying is the mother's voice. From the end of the second week, the mother's voice stops the baby's cry much faster than any other sounds or the visual presence of a person's face. And from the beginning of the third week, a new form appears - a fictitious cry of distress, it is intended solely to attract the attention of the mother. In the process of formation of the baby’s mental apparatus, the complexity of its auditory system occurs: the mother’s voice is distinguished from other voices, in addition to screaming, babbling appears (about 3-6 months) which becomes the forerunner of the subsequent possibility of speaking. Acoustic material is the basis for mental abilities, i.e. First, screaming is used to reduce tension in the child (as a reflex), and then as communication (with the help of screaming, the child communicates with his environment). In science, a repeatedly verified fact is the information that while still in the womb, the fetus at the twentieth week hears sounds (in the 16th week the inner ear is formed). At the same time, the loudest audible sounds are the mother’s voice and her heartbeat. The key parameter of these sounds is the timbre of the voice, i.e. vibrational component. I am always reminded of these facts from embryology when repeatedly observing the following cases from life. I sometimes had to observe the following picture - a person, deep in thought, hums a melody under his breath, without opening his mouth, as if “mooing” it, and sways slightly from side to side or back and forth. According to my observations, this behavior was reproduced at times when the subject experienced discomfort, anxiety or extreme fatigue. I think this scene demonstrates one of the primary forms of relationships - when the mother, rocking the baby, quiet and low.