Books that have changed how you view the world - First meetup!

For our first meetup, please share a non-fiction book that has changed the way you view the world. Any topic. Genres might include history, anthropology, science, self help/ personality frameworks, etc. I'm keeping it pretty open and hoping to discover something new because that's what this group is all about!

Each member will get an allotted time to share and answer questions about their book or books. We are still a small group and will likely have time to share more than one book per person depending on how many attend.