“Bed is the only place for protracted telephoning. It is also execellently suited to reading, sleeping and listening to canaries. It is not a good place for sex: sex should take place in armchairs, or in bathrooms, or on lawns which have been brushed but not too recently mown, or on sandy beaches if you happen to have been circumcised. If you are too tired to have intercourse except in bed you are probably too tired anyway and should be husbanding your strength.”