Mary Oliver said this quote

oxygen Everything needs it: bone, muscles, and even, while it calls the earth its home, the soul. So the merciful, noisy machine stands in our house working away in its lung-like voice. I hear it as I kneel before the fire, stirring with a stick of iron, letting the logs lie more loosely. You, in the upstairs room, are in your usual position, leaning on your right shoulder which aches all day. You are breathing patiently; it is a beautiful sound. It is your life, which is so close to my own that I would not know where to drop the knife of separation. And what does this have to do with love, except everything? Now the fire rises and offers a dozen, singing, deep-red roses of flame. Then it settles to quietude, or maybe gratitude, as it feeds as we all do, as we must, upon the invisible gift: our purest, sweet necessity: the air.