"Journeys are the midwives of thought. Few places are more conducive to internal conversations than a moving plane, ship or train. There is an almost quaint correlation between what is in front of our eyes and the thoughts we are able to have in our heads: large thoughts at times requiring large views, new thoughts new places. Introspective reflections which are liable to stall are helped along by the flow of the landscape. The mind may be reluctant to think properly when thinking is all it is supposed to do."