Becoming a father has also loosened some emotional nut in my brain, causing me to cry at odd times ? during school plays, or in the middle of breakfast-cereal adverts. Fatherhood's overriding emotion, however, is fear - fear that your children will come to harm, fall ill, go missing, have their innocence dented too early or be denied some particular advantage in life because of you. Letting them grow up confident and happy involves a monstrous pretence, requiring you to act as if, as far as you're concerned, everything is just fine; that the world is a safe and soft-hearted place.