Just because young people have not accumulated that much experience of life, does not mean they cannot understand what is going on, or that they will not feel profound grief and despair. In fact, it often means that they feel it more keenly. Unlike adults, who have been through bad times and so know that eventually you do feel better, young people have no way of anticipating the fading of this awful pain.

Attention, temperament and environment are all part of the equation, but without a positive parent, nothing will work well. I don't tame children. I change parents, who then get the best out of their individual Child.

Insurance companies know all about how different people pose different risks. Sometimes, they will refuse cover for drivers under twenty-five, especially if they are male, aggressive and impulsive. Girls of this age are always a safer bet, but in both sexes there are a few high-risk individuals with an accident-prone temperament.