"When Dove moves up from a canter to a gallop, sometimes the only way I can tell the difference is because her hooves pound a four-time rhythm instead of a three. But when Corr moves into a gallop, it's as if it's a gait that's just been invented, something so much faster than all the others that it should be called something else...Each stride feels like it takes us a mile. We'll run out of island before he runs out of speed. We're giants, on his back."