All uncertainty is fruitfull. . . so long as it is accompanied by the wish to understand
It's the uncertainty, the challenge and the willingness to put it all on the line that draws a lot of people to climb mountains. That can also apply to a lot of other challenges in life, whether it's running for office, starting a family, going to grad school or taking all of your cash and assets and starting a business.
A little uncertainty is good for everyone.
The world is noisy and messy. You need to deal with the noise and uncertainty.
The nature of the spiritual life is that we are certain in our uncertainty.
This condition of uncertainty and unrest in the Roman Empire might explain why at Plotinus' philosophy encourages us to sort of flee from the physical world and towards the world of ideas.
That was how a Salomon bond trader thought: He forgot whatever it was that he wanted to do for a minute and put his finger on the pulse of the market. If the market felt fidgety, if people were scared or desperate, he herded them like sheep into a corner, then made them pay for their uncertainty. He sat on the market until it puked gold coins. Then he worried about what he wanted to do.