Logic and mathematics are nothing but specialised linguistic structures. (Jean Piaget)
Reflective abstraction, however, is based not on individual actions but on coordinated actions. (Jean Piaget)
Logical positivists have never taken psychology into account in their epistemology, but they affirm that logical beings and mathematical beings are nothing but linguistic structures. (Jean Piaget)
The current state of knowledge is a moment in history, changing just as rapidly as the state of knowledge in the past has ever changed and, in many instances, more rapidly. (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)
During the earliest stages of thought, accommodation remains on the surface of physical as well as social experience. (Jean Piaget)
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)
The self thus becomes aware of itself, at least in its practical action, and discovers itself as a cause among other causes and as an object subject to the same laws as other objects. (Jean Piaget)
During the earliest stages the child perceives things like a solipsist who is unaware of himself as subject and is familiar only with his own actions. (Jean Piaget)
The principle goal of education in the schools should be creating men and women who are capable of doing new things, not simply repeating what other generations have done. (Jean Piaget)
Every acquisition of accommodation becomes material for assimilation, but assimilation always resists new accommodations. (Jean Piaget)
The more the schemata are differentiated, the smaller the gap between the new and the familiar becomes, so that novelty, instead of constituting an annoyance avoided by the subject, becomes a problem and invites searching. (Jean Piaget)
I have always detested any departure from reality, an attitude which I relate to my mother's poor mental health. (Jean Piaget)
In genetic epistemology, as in developmental psychology, too, there is never an absolute beginning. (Jean Piaget)
This means that no single logic is strong enough to support the total construction of human knowledge. (Jean Piaget)