By giving our students practice in talking with others, we give them frames for thinking on their own.
Lev S. VygotskyEvery 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.
Lev S. VygotskyThere is reason to believe that voluntary activity, more than highly developed intellect, distinguishes humans from the animals which stand closest to them.
Lev S. Vygotsky