"Speech and thinking of child" - one of main books in history of development of child's psychology, first published as early as 1923, translated into all leading languages of the world, bringing (and continuing to bring up) up the whole generations of scientists. Book, that and in our days lost actuality neither for psychologists and teachers nor for ordinary parents wishing truly to understand the child..A little man makes first advances in enormous, unknown world, cognizes him, studies to think and express the ideas aloud. Which are base features exactly of child's thinking? How from аутистического of the infantile thinking does a child go across, stage after the stage, through egocentric speech and egocentric thinking to the socialized speech and logical thinking of teenager?To this phenomenon of development of child's thinking and the book of the prominent Swiss psychologist is devoted Jean Пиаже.In the format of a4.pdf is stored publishing layout.