"Evolution has programmed us to feel rejection in our guts. This is how the tribe inforced obedience, by wielding the threat of expulsion. Fear of rejection isn't just psychological; it's biological. It's in our cells."

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We are now in the mountains and they are in us, kindling enthusiasm, making every nerve quiver, filling every pore and cell of us. Our flesh-and-bone tabernacle seems transparent as glass to the beauty about us, as if truly an inseparable part of it, thrilling with the air and trees, streams and rocks, in the waves of the sun,-a part of all nature, neither old nor young, sick nor well, but immortal.‎

— John Muir