"If one does not have a head of steel, it will burst; without a brain of mercury, he would not have a mirror;20 without skin of sheet iron, he would not endure the educational process; without a seat of lead, he would not endure sitting and would lose everything; and without a purse of gold, where would he obtain time and teachers, both living and dead? Or do you presume that such great things can be obtained without cost?"
