I could not think without writing.

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

Every time we teach a child something, we keep him from inventing it himself. On the other hand, that which we allow him to discover for himself will remain with him visible for the rest of his life.

True interest appears when the self identifies itself with ideas or objects, when it finds in them a means of expression and they become a necessary form of fuel for its activity.

Teaching means creating situations where structures can be discovered.

Are we forming children who are only capable of learning what is already known? Or should we try to develop creative and innovative minds, capable of discovery from the preschool age on, throughout life?

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