“ The quickest way is the subway, ” and our friendly guide dived at once into a staircase, which obviously led under the street. This was really frightening. What a noise ! On one side of the platform express trains thundered by, while on the other, locals came and went. The very air was in vibration, and I, simply rooted to the ground, decided not to take one single step in any direction. I was sure I would die there.