1. Take heed that the misdeeds for which thou correctest thy children be not learned them by thee. Many children learn that wickedness of their parents for which they beat and chastise them.
2. Take heed thou smile not upon them, to encourage them in small faults, lest that thy carriage to them be an encouragement to them to commit greater.
3. Take heed thou use not unsavoury and unseemly words in thy chastising of them, as railing, miscalling, and the like: this is devilish.
4. Take heed thou do not use them to many chiding words and threatenings, mixed with lightness and laughter; this will harden. Speak not much, nor often, but pertinent to them with all gravity. — John Bunyan
Sage advice indeed.