The stablest thing we can speak of
is not free from conditions.
Even the solid earth mountains
Appear and disappear like the clouds.
The fixed and unchanged Atom of Democritus
Is now said to possess some traits of non-being,
To embody a temporary equilibrium
In the economy of nature’s compromises.
A thing may endure secula seculorum
And yet not be everlasting;
It will crumble before the gnawing mouth
As it exceeds a certain measure.
Every existence is an event.
– John Dewey, Experience and Nature (1928). Pages 70-71 (reconfigured to show its music)