Underground Knowledge — A discussion group discussion

So many great books explore humanity’s place in the cosmos, but I’ve noticed some dive into the idea of hidden knowledge or universal energy as well. I find it exciting when characters uncover truths about consciousness or unseen forces that shape reality—it gives a whole other dimension to the story. Does anyone here have a favourite novel where the metaphysical is as important as the technology?

If you're interested in hard science non fiction on this, check out Cosmosapiens by John Hands. I read and reviewed it last month. A tough but educating read precisely on humanity's place in the cosmos.