"Nature is one great big wood-chipper. Sooner or later, everything shoots out the other end in a spray of blood, bones and hair."

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We do not doubt to assert, that air does not serve for the motion of the lungs, but rather to communicate something to the blood ... It is very likely that it is the fine nitrous particles, with which the air abounds, that are communicated to the blood through the lungs.

— John Mayow