But in every walk with Nature one receives far more than he seeks. – John Muir, July 1877

I think that I cannot preserve my health and spirits, unless I spend four hours a day at least — and it is commonly more than that — sauntering through the woods and over the hills and fields, absolutely free from all worldly engagements. – Henry David Thoreau

Backpacking: An extended form of hiking in which people carry double the amount of gear they need for half the distance they planned to go in twice the time it should take. – Author unknown