Scientific knowledge is in perpetual evolution it finds itself changed from one day to the next. – Jean Piaget
I have always detested any departure from reality, an attitude which I relate to my mothers poor mental health. – Jean Piaget
In other words, knowledge of the external world begins with an immediate utilisation of things, whereas knowledge of self is stopped by this purely practical and utilitarian contact. – Jean Piaget
It is with children that we have the best chance of studying the development of logical knowledge, mathematical knowledge, physical knowledge, and so forth. – Jean Piaget