Books and loud noises, flowers and electric shocks – already in the infant mind these couples were compromisingly linked; and after two hundred repetitions of the same or a similar lesson would be wedded indissolubly. What man has joined, nature is powerless to put asunder. ‘They’ll grow up with what the psychologists used to call an “instinctive” hatred of books and flowers. Reflexes unalterably conditioned. They’ll be safe from books and botany all their lives.’