Related:

• The number of stones in your boot is directly proportional to the number of hours you have been on the trail.
  -- Milt Barbe...
• Barber's Laws of Backpacking 1) The integral of the gravitational potential taken around any loop trail you choose to hike always comes out positive.
  2) Any stone in your boot always migrates against the pressure gradient to exactly the point of most pressure....
• If you take your boots off, you'll never get them back on again. -- Milt Barbe
• The difficulty of finding any given trail marker is directly proportional to the importance of the consequences of failing to find it.
  -- Milt Barbe...
• The local density of mosquitos is inversely proportional to your remaining repellant.
  -- Milt Barbe...
• The weight of your pack increases in direct proportion to the amount of food you consume from it.
  If you run out of food, the pack weight goes on increasing anyway. -- Milt Barbe...
• When you arrive at your campsite, it is full. -- Milt Barbe
• The integral of the gravitational potential taken around any loop trail you choose to hike always comes out positive.
  -- Milt Barbe...
• Any stone in your boot always migrates against the pressure gradient to exactly the point of most pressure.
  -- Milt Barbe...