Comprehension of human childhood in its cultural and anthropological senses is promising on the basis of the correlation of two ontological categories: stability and archetype. The categories of stability and archetype are considered in the relationship that determines the ontological platform of the history of a philosophical understanding of childhood, which is recorded in the representation of the child in all types of cultural texts from ancient myths to modern artistic and scientific texts. The conjugation of these categories in the understanding of childhood and the child is implicitly indicated in philosophy, religion, art, pedagogy, and psychology. The philosophical understanding of stability lies at the basis of the natural science study of a multilevel and complexly organized world, in which the existence of various phenomena can be explained and described by a certain model of sustainability: from the model of sustainability that denies the variability of the object under consideration, to the model of sustainability that certainly presupposes variability. The philosophical understanding of the archetype of the child lies at the basis of social and humanitarian knowledge. As a product of consciousness, any archetype is one of the ontological versions of stability. The category of the archetype indicates the stability of the matrices for the formation of generic experience in the collective unconscious. The archetype can be described within the framework of a stable crystal model - a permanent formation, essentially determined by the constant arrangement of internal elements. The crystal model of the stability of the child's archetype is manifested by the significance of space, time, movement in the phenomenological characteristics of this archetype: in abandonment, irresistibility, the unity of the initial and the final, the function of the future. The spatial parameters of archetypal abandonment and irresistibility are in strict symmetry. Thrown into being from the gap between being and nothing, the archetypal child is irresistibly rooted in being. The ontological function of the child archetype - the future - is constituted by the explication of time. The characteristic of the unity of the initial and the final objectifies the category of movement. A child, existing in a changeable world, being influenced by internal processes, can preserve oneself in an obvious simple way, maintaining an original structure by crystallizing. Childhood is the time of the primary crystallization of the personality, the laying of matrices of personal stability. The stability of the personality is expressed in the fact that, with any changes, the continuity of the main criteria that specify the personality from childhood is preserved.
