The progressive development of man is vitally dependent on invention.
No human being should learn from another. Each individual should develop his own powers to the uttermost, not try to imitate those of someone else.
With these developments we have every reason to anticipate that in a time not very distant most telegraphic messages across the oceans will be transmitted without cables. For short distances we need a “wireless” telephone, which requires no expert operators.
The psychic development of the individual is a short repetition of the course of development of the race.[Die seelische Entwicklung des Einzelnen den Lauf der Menschheitsentwicklung abgekürzt wiederhole.]
It is to be noted that the play of children is not really play, but must be judged of as their most serious actions.[De vray il faut noter, que les ieux des enfants ne sont pas ieux: et les faut iuger en eux, comme leurs plus serieuses actions.]
All that is valuable in human society depends upon the opportunity for development accorded the individual.