Lev Vygotsky Quotes
Every function in the child's cultural development appears twice: first, on the social level, and later, on the individual level; first, between people (interpsychological) and then inside the child (intrapsychological). This applies equally to voluntary attention, to logical memory, and to the formation of concepts. All the higher functions originate as actual relationships between individuals.
Vygotsky, Lev S. Mind in Society: The Development of Higher Psychological Processes. Edited by Michael Cole et al., Harvard University Press, 1978, p. 57.
Lev Semyonovich Vygotsky was a Soviet psychologist, known for his work on psychological development in children. He published on a diverse range of subjects, and from multiple views as his perspective changed over the years. Among his students was Alexander Luria.