
INCERTITUDE
(French for “Uncertainty”)

You can’t step into the same river twice.
Heraclitus Ἡράκλειτος fl. c. 500 BC
A man asked Hillel if he could be taught the whole Torah while standing on one foot. Hillel gently chided the man: "What is hateful to you, do not do to your fellow: this is the whole Torah; the rest is commentary, now go and learn."
Hillel (Hebrew: הִלֵּל) variously called Hillel the Elder or Hillel the Babylonian died c. 10 CE
Wu Wei (traditional Chinese: 無為; simplified Chinese: 无为); is an ancient Chinese concept that literally means "actionlessness" or "motionlessness". The term is widely known as a Taoist concept denoting the nature of Tao, meaning that while Tao is the source of all existence and manifesting all phenomena, its intrinsic nature remains formless, motionless, changeless, timeless, and uncreated.
Wikipedia

"After all," said the Duchess vaguely, "there are certain things you can't get away from. Right and wrong, good conduct and moral rectitude, have certain well-defined limits."
"So, for the matter of that," replied Reginald, "has the Russian Empire. The trouble is that the limits are not always in the same place."
[ . . . . . . . ]
"Oh, you're simply exasperating. You've been reading Nietzsche till you haven't got any sense of moral proportion left. May I ask if you are governed by any laws of conduct whatever?"
"There are certain fixed rules that one observes for one's own comfort. For instance, never be flippantly rude to any inoffensive grey-bearded stranger that you may meet in pine forests or hotel smoking-rooms on the Continent. It always turns out to be the King of Sweden."
Excerpts from Reginald at the Theatre by H.H. Munro (SAKI) 1870 – 1916.

In Bordeaux, contemplating the vicissitudes and mysteries of life.

"Mulla”, said his elderly neighbor, “I am told you know a great many useful facts. So tell me, during a funeral, should one stand to the right or left of the coffin? ”
“It makes no difference at all,” replied Nasrudin, “Just keep well away from the middle.”
The Exploits of the Incomparable Mulla Nasrudin by Idries Shah
Images licensed from unsplashed.com. Photographers in order of use: Austin Chan, Luke Wass, Alex Block, and Eileen Pan