If you want to effectively acquire a broad understanding of the human condition as it has been understood throughout history, the great books of the classical tradition (including, yes, myths and fables that talk about e.g. the sun being driven across the sky by magic horses!) will do a far better job of that than just about anything that was written in the 20th or 21st centuries. Young kids have the kind of cognitive development that's required to make good progress on that, while they would be very limited wrt. understanding anything other than the very basics of math and science.