impermanence

"Consider how quickly all things are dissolved and resolved: the bodies and substances themselves, into the matter and substance of the world: and their memories into the general age and time of the world."

"This world is mere change, and this life, opinion."

"Every new beginning comes from some other beginning's end."

"Look back over the past, with its changing empires that rose and fell, and you can foresee the future, too."