To express the same idea in still another way, I think that human knowledge is essentially active.

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

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.

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.