Because I am a Zen Buddhist and a socialist, many people assume I am a humanist, as they think Buddhism and socialism are both humanist. I think the opposite. The Buddhist understanding of interdependence precludes the arrogant view that is human exceptionalism. And if socialism is only for humans then it is not socialism, because it is still class-based, with bosses and bossed, exploiters and exploited.
Although I have criticisms of the book, I like the subtitle of Timothy Morton’s Humankind: Solidarity With Non-Human People. We need to see not just all clearly-sentient beings as people, but also rocks, walls, pens, machines, as people.