Thought by Alice Dunbar-Nelson

A swift, successive chain of things,
That flash, kaleidoscope-like, now in, now out,
Now straight, now eddying in wild rings,
No order, neither law, compels their moves,
But endless, constant, always swiftly roves.

~ in the Public Domain  (originally appeared in Violets and 
Other Tales, The Monthly Review, 1895)