Slang, Profanity, Intemperance.
Slang should be eliminated, as much as possible, from the household vocabulary. Boys should be taught that profanity, or vulgarity in expression, far from being manly, only lowers them in the estimation of all sensible people.
It should also be early impressed upon them that there is danger in the use of liquor in any form, as well as folly in falling into the tobacco habit.