“But Christopher didn't have the words, then, to explain what, nonetheless, he knew: that sometimes, if you are among the very lucky, a spark of understanding cuts like lightning across the space between two people. 'It's a defibrillator for the heart. And it toughens you. It nourishes you. And the word we've chosen for it (which is an insufficient word for being so abruptly upended in a new and finer place) is friendship!”