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.

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

Writing should be meaningful for children, Y an intrinsic need should be aroused in them, and Y writing should be incorporated into a task that is necessary and relevant.

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

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

Childhood is a complex dialectical process characterized by periodicity, unevenness in the development of different functions, metamorphosis or qualitative transformation of one form into another, intertwining of external and internal factors, and adaptive processes which overcome impediments that the child encounters.