Jens Finkhäuser finished reading Thinking in Systems by Donella H. Meadows
This is a hard to summarise book. It was recommended to me by a mate friend who realised I liked to engage in systems thinking, and had a name for it.
The book introduces you to a lot of concepts and experiences with systems thinking, but it's not a how-to guide. As you progress through the book, it becomes ever more apparent that such a guide could not really exist.
It confirms more or less how I see systems - which is good, because apparently there are more people like me. And bad, because there wasn't all that much to learn from it.
That said, I think in quite a few instances, the phrasing of one issue or another is significantly better than any of my own. I may quote this book a lot in future.