A scene is all I'm sitting under the sunlight, I see a bumblebee flying over the stonemason, from one flower to another. So begins one of the letters, entitled "Origin". Who paints the scene is the widow of Jakob von Uexküll, addressed these biological Letters, 1920. She asks for two people who apparently have nothing to do but they seem made for each other. musical question, ask for the love of the world. In another letter he speaks of the invisible threads that break Newton's apple. Another scene ... and then disappears.

The biologist takes his pen, seeks to explain (it) the life of the worlds. A little walk discovers that, while considered beings-subjects, no one world, but many, perhaps one for each being. The notion of Umwelt (surrounding world) emerges bright, call to have the most widespread influence on the future of biology, ethology, philosophy. The anthropomorphic view that emplazaba us all in the same world, our space-time collapses. Sprout worlds of different colors, each comes far he can, but does so relentlessly. Between the worlds musical relationships, point and counterpoint, bumblebee to flower. Nothing is left to chance, everything fits each other. There is an order, a harmony, a plan.

Conformity to plan is the power in the world that creates subjects. Through it is perceived in the melody sounds plenty of links to all beings. It manifests itself in the body structure of all living beings, but also humans, who in his delusion believe to be an empire within another. Hence the origin of the pain. Uexküll laments: Human, who believes carry the scepter of freedom can not exist without the scourge of nature. His comfort: You need only restore its surrounding world.