Homeostasis

The constant conditions which are maintained in the body might be termed equilibria. That word, however, has come to have fairly exact meaning as applied to relatively simple physico-chemical states, in closed systems, where known forces are balanced. The coordinated physiological processes which maintain most of the steady states in the organism are so complex and so peculiar to living beings- involving, as they may, the brain and nerves, the heart, lungs, kidneys and spleen, all working coo...

 A Poetic Description of Ourselves as the Sum of Our Parts

...when you die, you are grieved by all the atoms of which you were composed. They hung together for years, whether in sheets of skin or communities of spleen. With your death they do no die. Instead, they part ways, moving off in their separate directions, mourning the loss of a special time they shared together, haunted by the feeling that they were once playing parts in something larger than themselves, something that had its own life, something they can hardly put a finger on.