"I grant this mode of secluding boys from the intercourse of private families has a tendency to make them scholars, but our business is to make them men, citizens, and Christians. The vices of young people are generally learned from each other. The vices of adults seldom infect them. By separating them from each other, therefore, in their hours of relaxation from study, we secure their morals from a principal source of corruption, while we improve their manners by subjecting them to those restraints which the difference of age and sex naturally produce in private families."