Robert Macfarlane said this quote

What we bloodlessy call 'place' is to young children a wild compound of dream, spell and substance: place is somewhere they are always 'in', never 'on'.

~ Robert Macfarlane

The compact between writing and walking is almost as old as literature -- a walk is only a step away from a story, and every path tells.

~ Robert Macfarlane

From my heel to my toe is a measured space of 29.7 centimetres or 11.7 inches. This is a unit of progress and it is also a unit of thought. 'I can only meditate when I am walking,' wrote Jean-Jacques Rousseau in the fourth book of his 'Confessions', 'when I stop I cease to think; my mind only works with my legs.' Søren Kierkegaard speculated that the mind might function optimally at the pedestrian pace of three miles per hour, and in a journal entry describes going out for a wander and finding himself 'so overwhelmed with ideas' that he 'could scarcely walk'. Christopher Morley wrote of Wordsworth as 'employ[ing] his legs as an instrument of philosophy' and Wordsworth of his own 'feeling intellect'. Nietzsche was typically absolute on the subject - 'Only those thoughts which come from 'walking' have a value' - and Wallace Stevens typically tentative: 'Perhaps / The truth depends on a walk around the lake.' In all of these accounts, walking is not the action by which one arrives at knowledge; it is itself the means of knowing.

~ Robert Macfarlane

We tend to think of landscapes as affecting us most strongly when we are in them or on them, when they offer us the primary sensations of touch and sight. But there are also the landscapes we bear with us in absentia, those places that live on in memory long after they have withdrawn in actuality, and such places -- retreated to most often when we are most remote from them -- are among the most important landscapes we possess.

~ Robert Macfarlane