“The rule, explained so well by Emil’s writer, but which would be inconsistent with the outline of public education, consists of combining instruction with action and rules with experience. The upbringing of one person is very different from the upbringing of many. A private mentor, who is always with his pupil, can at his own will have successes; he can even use those that the case presents - in a word, he can follow the writer of Emil, as long as he is provided with enlightenment, rules of instruction, constancy...”