“That nothing is static or fixed, that all is fleeting and impermanent, is the first mark of existence. It is the ordinary state of affairs. Everything is in process. Everything—every tree, every blade of grass, all the animals, insects, human beings, buildings, the animate and the inanimate—is always changing, moment to moment. We don’t have to be mystics or physicists to know this. Yet at the level of personal experience, we resist this basic fact. It means that life isn’t always going to go our way. It means there’s loss as well as gain.”