Mixture of assimilation to earlier schemas and adaptation to the actual conditions of the situation is what defines motor intelligence. But and this ….

In certain circumstances where he experiments in new types of conduct by cooperating with his equals, the child is already an adult. There is an adul….

Logic and mathematics are nothing but specialised linguistic structures..

The most developed science remains a continual becoming.

Scientific thought, then, is not momentary; it is not a static instance; it is a process..

I am convinced that there is no sort of boundary between the living and the mental or between the biological and the psychological. From the moment a….

The discussion of the game of marbles seems to have led us into rather deep waters. But in the eyes of children the history of the game of marbles ha….

We learn more when we are compelled to invent..

The essential functions of the mind consist in understanding and in inventing, in other words, in building up structures by structuring reality..

To express the same idea in still another way, I think that human knowledge is essentially active..