Henry David Thoreau said this quote

We are but faint-hearted crusaders...our expeditions are but tours...half the walk is but retracing our steps. We should go forth on the shortest walks, perchance, in the spirit of stirring adventure, never to return, --prepared to send back our embalmed hearts only as relics to our desolate kingdoms...if you have paid your debts and made your will, and settled all your affairs, and are a free man, then you are ready for a walk.