“The sum of the whole is this: walk and be happy, walk and be healthy. “The best of all ways to lengthen our days” is not, as Mr. Thomas Moore has it, “to steal a few hours from night, my love;” but, with leave be it spoken, to walk steadily and with a purpose. The wandering man knows of certain ancients, far gone in years, who have staved off infirmities and dissolution by earnest walking,–hale fellows close upon eighty and ninety, but brisk as boys.”
–   Charles Dickens

“Above all do not lose your desire to walk.  Everyday I walk myself into a state of well being and walk away from every illness.  I have walked myself into my best thoughts and I know of no thought so burdensome that one cannot walk away from it.  But by sitting still, and the more one sits still, the closer one comes to feeling ill … if one keeps on walking everything will be alright.”
–   Soren Kierkegaard

Quotes found on The ways of walking