“They Harry Potters still enormously outnumber the likes of Petunia and Vernon Dursley in society, who just don't hold with such nonsense, perhaps reflecting how modern life seems more out of control than ever. Most people do indeed believe in magic of one sort or another, whether the thespian who shouts "break a leg" at a colleague, the student who always wears the same outfit for exams, the blushing bride who crosses her fingers for good luck or those who jump with joy when they find a four-leaf clover. Why is our belief in magic so deeply ingrained? Indeed, why do we believe in anything at all?”