Every living system exchanges matter, energy and information. Exchanges are vital and they require a medium a lymph. In plants, the lymph that allows exchanges is water. Water flows from the roots upwards, through the conductive vessels that branch out in each leaf to reach the individual cells. In zoology, lymph is the liquid that circulates in invertebrates, also called hemolymph. In humans, the vital liquid flows both in the lymphatic system and in the circulatory system. In human societies, the lymph is money. It allows for exchanges and therefore has a central position in the life of every person and every nation. Whoever controls money holds power over society and individuals.
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