An Englishman, a Frenchman and a Russian were discussing happiness. "Happiness," said the Englishman, "Happiness is when you return home tired after work, yet find your slippers  warming by the fire." "You English have no romance," said the Frenchman. "Happiness is when you go on a business trip, find a pretty girl who entertains you -then afterwards you part  without regrets ." "You are both wrong," said the Russian. "True happiness is when you are at home in bed and at 4 a.m., you hear a ring at the door and outside stand the secret police, who say to you, 'Ivanovitch, you are under arrest', and you say, 'Sorry, Ivanovitch lives next door.'" The meaning of the Russian's words is that   _  .
he would like to have a good sleep at night he will feel happy if his neighbour is arrested he thinks it happiness to feel safe he will feel afraid if anyone knocks at his door at night