The lesson? To respond to the unexpected and hurtful behavior of others with something more than a wipe of the glasses, to see it as a chance to expand our understanding.
At the beginning of human history, as we struggled to light fires and to chisel fallen trees into rudimentary canoes, who could have predicted that long after we had managed to send men to the moon and areoplanes to Australasia, we would still have such trouble knowing how to tolerate ourselves, forgive our loved ones, and apologise for our tantrums?
To be loved by someone is to realize how much they share the same needs that lie at the heart of our own attraction to them. Albert Camus suggested that we fall in love with people because, from the outside, they look so whole, physically whole and emotionally 'together' - when subjectively we feel dispersed and confused. We would not love if there were no lack within us, but we are offended by the discovery of a similar lack in the other. Expecting to find the answer, we find only the duplicate of our own problem.
There are things that are not spoken about in polite society. Very quickly in most conversations you'll reach a moment where someone goes, 'Oh, that's a bit heavy,' or 'Eew, disgusting.' And literature is a place where that stuff goes; where people whisper to each other across books, the writer to the reader. I think that stops you feeling lonely – in the deeper sense, lonely.