There is no such uncertainty as a sure thing.

There is no such uncertainty as a sure thing.

To be uncertain is to be uncomfortable, but to be certain is to be ridiculous.

To be uncertain is to be uncomfortable, but to be certain is to be ridiculous.

For my part I know nothing with any certainty, but the sight of the stars makes me dream.

For my part I know nothing with any certainty, but the sight of the stars makes me dream.

This
I ever held worse that all certitude,
To know not what the worst ahead might be.

This
I ever held worse that all certitude,
To know not what the worst ahead might be.

Who knows whether the gods will add tomorrow to the present hour?
[Lat., Quis scit, an adjiciant hodiernae crastina read more

Who knows whether the gods will add tomorrow to the present hour?
[Lat., Quis scit, an adjiciant hodiernae crastina summae
Tempora di superi?]

Maturity of mind is the capacity to endure uncertainty.

Maturity of mind is the capacity to endure uncertainty.

Knowledge is an unending adventure at the edge of uncertainty.

Knowledge is an unending adventure at the edge of uncertainty.

When the mind is in a state of uncertainty the smallest impulse
directs it to either side.
[Lat., read more

When the mind is in a state of uncertainty the smallest impulse
directs it to either side.
[Lat., Dum in dubio est animus, paulo momento huc illuc
impellitur.]

We demand guaranteed rigidly defined areas of doubt and uncertainty.

We demand guaranteed rigidly defined areas of doubt and uncertainty.