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

Education, for most people, means trying to lead the child to resemble the typical adult of his society . . . but for me and no one else, education means making creators. . . . You have to make inventors, innovators...not conformists

Children have real understanding only of that which they invent themselves, and each time that we try to teach them too quickly, we keep them from reinventing it themselves.

Experience precedes understanding.

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

This means that no single logic is strong enough to support the total construction of human knowledge.

Scientific knowledge is in perpetual evolution; it finds itself changed from one day to the next.