David Aaronovitch has an interesting piece today on educating children. It reminds me of one of my favourite anecdotes.
The remarkably accomplished Ron Cass told me how, when he was 10, his father yelled at him in exasperation at something he had done: "How did you turn out to be so stupid?".
Without a moment's hesitation, the ten year old Ron replied: "Inheritance or upbringing; you decide."