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.

It may be said that the basic characteristic of human behavior in general is that humans personally influence their relations with the environment and through that environment personally change their behavior, subjugating it to their control.

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.

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

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

What a child can do today with assistance, she will be able to do by herself tomorrow.

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