Daniel Quinn wrote a book called Ishmael. At the time I read it, some 20 or so years ago now, it had a profound impact on how I thought of myself and my place in the world. From Wikipedia - "Ishmael is a 1992 philosophical novel by Daniel Quinn. It examines mythology, its effect on ethics, and how that relates to sustainability. The novel uses a style of Socratic dialogue to deconstruct the notion that humans are the end product, the pinnacle of biological evolution. It posits that human supremacy is a cultural myth, and asserts that modern civilization is enacting that myth." . The book forced me to challenge some assumptions I had grown up with and, in doing so, it changed the way I saw the world.
I'll be posting these portraits periodically and numbering them in the titles but they are in no particular order of importance in their influence.