"If now any one ask me where is this innate force in our bodies... it... resides in what the ancients called the parenchyma... in the very substance of the organs not including the veins, that arteries, the nerves, in a word, it resides in the organization of the whole body... consequently each organ contains within itself forces more or less active according to the need of them."
January 1, 1970
https://en.wikiquote.org/wiki/Man_a_Machine