Some things are rushing into existence, others out of it. Some of what now exists is already gone. Change and flux constantly remake the world, just as the incessant progression of time remakes eternity.
We find ourselves in a river. Which of the things around us should we value when none of them can offer a firm foothold?
Like an attachment to a sparrow: we glimpse it and it’s gone.
And life itself: like the decoction of blood, the drawing in of air. We expel the power of breathing we drew in at birth (just yesterday or the day before), breathing it out like the air we exhale at each moment.
— Meditations, Marcus Aurelius