Quotes on “certainty”

If a man will begin with certainties, he shall end in doubts; but if he will be content to begin with doubts, he shall end in certainties.

To learn which questions are unanswerable, and not to answer them: this skill is most needful in times of stress and darkness.

In our reasonings concerning matter of fact, there are all imaginable degrees of assurance, from the highest certainty to the lowest species of moral evidence. A wise man, therefore, proportions his belief to the evidence.

Ignorance more frequently begets confidence than does knowledge: it is those who know little, not those who know much, who so positively assert that this or that problem will never be solved by science.

I believe in intuitions and inspirations...I sometimes FEEL that I am right. I do not KNOW that I am.