Inquiry is fatal to certainty.
Certainties are arrived at only on foot.
In this world nothing can be said to be certain, except death and taxes.
There is nothing certain, but the uncertain.
Certainty? In this world nothing is certain but death and taxes.
To be uncertain is to be uncomfortable, but to be certain is to be ridiculous.
There is nothing certain except the unforeseen.
What men want is not knowledge, but certainty.
When we are not sure, we are alive.
The present is the only reality and the only certainty.
I am certain of nothing but the holiness of the heart's affections, and the truth of imagination.
Positiveness is an absurd foible. If you are in the right, it lessens your triumph; if in the wrong, it adds shame to your defeat.