A word devoid of thought is a dead thing, and a thought unembodied in words remains a shadow.

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

Pedagogy must be oriented not to the yesterday, but to the tomorrow of the child's development. Only then can it call to life in the process of education those processes of development which now lie in the zone of proximal development

The only 'good' learning is that which is in advance of development.

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

By giving our students practice in talking with others, we give them frames for thinking on their own.