Any human act that gives rise to something new is referred to as a creative act, regardless of whether what is created is a physical object or some mental or emotional construct that lives within the person who created it and is known only to him.

The specifically human capacity for language enables children to provide for auxiliary tools in the solution of difficult tasks, to overcome impulsive action, to plan a solution to a problem prior to its execution, and to master their own behavior.

Thought is not merely expressed in words, it comes into existence through them

What children can do with the assistance of others might be in some sense even more indicative of their mental development than what they can do alone

A child’s greatest achievements are possible in play, achievements that tomorrow will become her basic level of real action.

Psychology teaches us at every step that though two types of activity can have the same external manifestation, whether in origin or essence, their nature may differ most profoundly.

The teacher must adopt the role of facilitator not content provider.