Inequality makes everyone unhappy, the poor most of all, and that is well within the remit of the state. More money gives less extra happiness the richer we get, yet we are addicted to earning and spending more every year.

But the single overwhelming reason why jails are bursting is longer sentences given for more crimes.

This is indeed a clash of civilisations, not between Islam and Christendom but between reason and superstition.

Islam, Christianity and Judaism all define themselves through disgust of women's bodies.

So what really works? Treatments in jail do some good, but it's mostly too late: finding a family and a job or just growing older make most prisoners eventually give up crime.

Inequality makes everyone unhappy, the poor most of all, and that is well within the remit of the state. More money gives less extra happiness the richer we get, yet we are addicted to earning and spending more every year.

The pens sharpen – Islamophobia! No such thing. Primitive Middle Eastern religions, and most others, are much the same – Islam, Christianity and Judaism all define themselves through disgust for women's bodies.