I’ve been on an octopus kick for a little while now. In that, I don’t seem to be alone. Octopuses (it’s incorrect to say “octopi,” to my despair) are having a moment: There are award-winning books, documentaries and even science fiction about them. I suspect it’s the same hunger that leaves many of us yearning to know aliens: How do radically different minds work? What is it like to be a truly different being living in a similar world? The flying objects above remain unidentified. But the incomprehensible objects below do not. We are starting to be smart enough to ask the question: How smart are octopuses? And what are their lives like? Sy Montgomery is a naturalist and the author of dozens of books on animals. In 2015 she published the dazzling book “The Soul of an Octopus,” which became a finalist for the National Book Award in nonfiction. It’s an investigation not only into the lives and minds of octopuses but also into the relationships they can and do have with human beings. This was one of those conversations that are hard to describe, but it was a joy to have. Montgomery writes and speaks with an appropriate sense of wonder about the world around us and the other animals that inhabit it. This is a conversation about octopuses, of course, but it’s also about us: our minds, our relationship with the natural world, what we see and what we’ve learned to stop seeing. It will leave you looking at the water — and maybe at yourself — differently. Book recommendations: The Outermost House by Henry Beston The Old Way by Elizabeth Marshall Thomas King Solomon's Ring by Konrad Lorenz You can find transcripts (posted midday) and more episodes of "The Ezra Klein Show" at nytimes.com/ezra-klein-podcast, and you can find Ezra on Twitter @ezraklein. Book recommendations from all our guests are listed at https://www.nytimes.com/article/ezra-klein-show-book-recs. Thoughts? Guest suggestions? Email us at [email protected]. “The Ezra Klein Show” is produced by Annie Galvin, Jeff Geld and Rogé Karma; fact-checking by Mary Marge Locker and Michelle Harris; original music by Isaac Jones; mixing by Jeff Geld, audience strategy by Shannon Busta. Special thanks to Kristin Lin.