“The most significant moment in the course of intellectual development, which gives birth to the purely human forms of practical and abstract intelligence, occurs when speech and practical activity, two previously completely independent lines of development, converge.”

“Somehow our society has formed a one-sided view of the human personality, and for some reason everyone understood giftedness and talent only as it applied to the intellect. But it is possible not only to be talented in one's thoughts but also to be talented in one's feelings as well.”

“What a child can do in cooperation today, he can do alone tomorrow.”

“The most significant moment in the course of intellectual development, which gives birth to the purely human forms of practical and abstract intelligence, occurs when speech and practical activity, two previously completely independent lines of development, converge.”