From A. S. Neill, Summerhill, Hart, 1960.

Do you seriously believe that the way to break bad habits is to let children continue their vices?

Vices? In whose opinion are they vices?

Bad habits? You mean masturbation, possibly.

By forcibly breaking a habit, you do not cure it. The only cure for any habit is to allow the child to outlive his interest in that habit. Children who are allowed to masturbate indulge much less than chinldren who have been forbidden to masturbate.