Books to develop wisdom

There's a nuance here. There is a kind of self help that is a bit too on the self optimisation side that I'm not so keen on.

I'm more interested in books that may make me more openminded, sensitive, knowledgable, develop my wisdom. Maybe stuff on emotions, human nature, experience – without being too flowery or pretentious.

Fiction is welcome. Not sure if philosophy is what I need rn but that is welcome too.