"All sanity depends on this: that it should be a delight to feel heat strike the skin, a delight to stand upright, knowing the bones are moving easily under the flesh"
Dogs know this. That is why dogs are so sane. If you don't believe me, go and study a dog. Watch him or her going about his or her business. You will see it and some of the sanity will rub off on you.
Life is great when your bones move easily under your flesh.