some favorite quotes from John Muir:

Take a course in good water and air; and in the eternal youth of Nature you may renew your own. Go quietly, alone; no harm will befall you.
Keep close to Nature’s heart… and break clear away, once in awhile, and climb a mountain or spend a week in the woods. Wash your spirit clean.
The mountains are calling and I must go.
In every walk with nature one receives far more than he seeks.
Everybody needs beauty as well as bread, places to play in and pray in, where nature may heal and give strength to body and soul.
The clearest way into the Universe is through a forest wilderness.
The power of imagination makes us infinite.
When we try to pick out anything by itself, we find it hitched to everything else in the universe.
Between every two pines is a doorway to a new world.
I only went out for a walk and finally concluded to stay out till sundown, for going out, I found, was really going in.