Regarding the von Mises quote:

I do feel that most schools are set up to train children into working, but not necessarily thinking, adults. The textbooks alone demonstrate this - every child must be filled with data - but not taught to discover new things on his own. It is "training", not learning.

Children should be permitted to explore the world around them. Every brilliantly scientific person I know looks at things - examines things in real life. They take things apart and put them back together again. They are very interested in the world itself! Not solely in reading about the world in books. (Although they all do read a lot of different kinds of books.)

When education consists of sitting at a desk and perhaps doing a few experiments in the back of the classroom, children won't truly learn. They aren't free!

Here is another link on children:

Learn Study Technology by L. Ron Hubbard