Currently reading The Glass Bead Game by Herman Hesse, kinda strange and slow, but intriguing. It's set way in the future and a large colony has returned to some notion of classical intellectualism, a backlash from our modern fucktardery, not sure if I agree with the commentary on us this offers. It's nice at parts but really I'm just trying to finish and be done with it. Not something I would recommend. It's considered a classic so maybe don't listen to me.
Up next for me is a trilogy of Alan Watts books I found at the library. I like his talks on youtube so much I decided I need to read something by him now.
As for recommendations I strongly suggest anything by Daniel Quinn, particularly his Ishmael trilogy. Very readable, it amounts to a complete philosophical presentation of the human condition from the author. It can very loosely be categorized as 'environmental'. This is some controversial material. It goes against views ranging from what could be called religious to nihilistic, and many in between.