"Whenever you have to deal with a boy who is a rebel, remember that you must not fail at some time or other to get him…"

"What is it that is done to our children that their puberty should deform them? They have the joy of movement; they ha…"

"There can be no doubt that the youth of today have to be protected against certain poisonous effects inherent in pres…"

"The passion of rescue reveals the highest dynamic of the human soul."

"I regard it as the foremost task of education to insure the survival of these qualities: an enterprising curiosity, a…"

"An eminent man challenged me to explain what sailing in a schooner could do for international education. In reply, I …"

"It is a sin of the soul to force young people into opinions … but it is culpable neglect not to impel young people in…"

"It is true that mathematics, owing to the fact that its whole content is built up by means of purely logical deductio…"

"Mathematical knowledge, therefore, appears to us of value not only in so far as it serves as means to other ends, but…"

"Out of the interaction of form and content in mathematics grows an acquaintance with methods which enable the student…"