As I grew older I realized that an encyclopedia could be written about the things I didn't know about strings. But now don't think for a minute that these books would be full of actual facts about strings. If you think this, you've again mistaken the writer's craft. The books would be full of fascinating stories and information about strings. Matters of the heart are the things that people say they come to understand as they grow.
Great authors write compelling pieces about the heart, about the human condition.
But of course they only write about what's in their head and all else is based on a happily profound ignorance of what's inside others'. I will tell you about a woman who worked all her life on a fishing boat around the tempestuous waters of the south Chile coast. She began it to help her husband. They had failed to have any children and working near him everyday was some compensation for not having children around her every day, for having around her nothing, in the way of children. Her knowledge of children was nothing.