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

The child begins to perceive the world not only through his [or her] eyes but also through his [or her] speech

Experience teaches us that thought does not express itself in words, but rather realizes itself in them

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

Through others we become ourselves.

Learning is more than the acquisition of the ability to think; it is the acquisition of many specialized abilities for thinking about a variety of things.

Language is the tool of the tools