I think art, especially literature, has the particular power to immerse the viewer or reader into another world. This is especially powerful in literature, when a reader lives the experience of the characters. So if the characters are human and real enough, then readers will feel empathy for them.
My mom is the kind of mom, when we would go to a friend of the family's house, and they would offer us something to drink or offer us something to eat, my mother would always say, 'Tell them no.' You could be starving - you could be dehydrated - but as kids, we were supposed to tell the host, 'No.'
I always understood my ancestry, like that of so many others in the Gulf Coast, to be a tangle of African slaves, free men of color, French and Spanish immigrants, British colonists, Native Americans - but in what proportion, and what might that proportion tell me about who I thought I was?
I've found that in fiction - and this is just the kind of writer I am - I can't really work from an outline. I have a vague idea of the characters at the beginning of the book, and then I have a vague idea of whatever the end of the book will be, but I can't approach creative nonfiction like that.