What we see changes what we know. What we know changes what we see.

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.

Only education is capable of saving our societies from possible collapse, whether violent, or gradual.

Equilibrium is the profoundest tendency of all human activity.

In genetic epistemology, as in developmental psychology, too, there is never an absolute beginning.

Teaching means creating situations where structures can be discovered.

The principal goal of education is to create men who are capable of doing new things, not simply of repeating what other generations have done-men who are creative, inventive, and discovers. The second goal of education is to form minds which can be critical, can verify, and not accept everything they are offered.