On the one hand, there are individual actions such as throwing, pushing, touching, rubbing. It is these individual actions that give rise most of the time to abstraction from objects.
-- Jean Piaget
   
Jean Piaget   Name:
Jean Piaget
Type:
Psychologist
Nationality:
Swiss
Birth:
August 9, 1896
Death:
September 16, 1980
https://www.nutquote.com/quote/Jean_Piaget