Novels
I have been reading a fair amount of novels as of recent. Books including “A Clockwork Orange” and the whole Foundation Series. I used to stick mostly to non-fiction, thinking of leasurely reading as not teaching you anything but there is something that novels can teach that non-fiction can’t.
This is the “moral of the story”. Every novel has one, and most are complex comments of the way something in the world is or should be. These give you new perspectives an open your mind up to different ways.
So I like to think that reading lots of novels is something that can teach you to be more open minded.