Deborah Moggach

Once you start cycling, the city opens up for you. No longer are you fighting it, hot and frustrated; no longer are you at the mercy of bus drivers, roadworks, decisions made by others and over which you have no control. Believe me, once you've tasted this freedom, you're hooked.

It is only when you watch the dense mass of thousands of ants, crowded together around the Hill, blackening the ground, that you begin to see the whole beast, and now you observe it thinking, planning, calculating. It is an intelligence, a kind of live computer, with crawling bits for its wits.