I am looking for reflections related to relationships between things, connections, interconnections, in the context of understanding/explaining the essence of things (e.g, in the field of ontology).
In the Dialectical Materialism (Spirkin), there is an introduction of the principle of Universal Connection:
The concept of universal connection. Nothing in the world stands by itself. Every object is a link in an endless chain and is thus connected with all the other links. And this chain of the universe has never been broken; it unites all objects and processes in a single whole and thus has a universal character. We cannot move so much as our little finger without "disturbing" the whole universe. The life of the universe, its history lies in an infinite web of connections.
I was interested by Nothing in the world stands by itself, which can be a good start to define things through the relationships they establish. However, according to google, this principle doesn't seem to be famous in Philosophy... Any pointers?