Jean PiagetThinkers

Education's principle goal is to create men who are capable of doing new things, not simple of repeating what other generations have done-- men who are creative, inventive, and discoverers.

Nature is solely a product of thought. One could not say that in nature itself' the solar system has nine planets... there is nothing like 'nine' in nature... the 'nine' as a possible property of certain systems in the world arises with the presence of 'nine' in our thought, in behavior, and in language.

Psychoanalysis is a sort of individual history, an embryology of the personality.

Time is, among children, conceived in terms of spatial seriation (i.e. As time spans as 'shorter' and 'longer').