" I believe we accept too indifferently the fact of infantile amnesia—that is, the failure of memory for the first years of our lives—and fail to find in it a strange riddle. We forget of what great intellectual accomplishments and of what complicated emotions a child of four years is capable. We really ought to wonder why the memory of later years has, as a rule, retained so little of these psychic processes, especially as we have every reason for assuming that these same forgotten childhood activities have not glided off without leaving a trace in the development of the person, but that they have left a definite influence for all future time. "
― Sigmund Freud , The Psychopathology of Everyday Life