That though we are certain of many things, yet that Certainty is no absolute Infallibility, there still remains the possibility of our being mistaken in all matters of humane Belief and Inquiry.
Sentiment: NEGATIVE
It may not be impossible, but that our Faculties may be so construed, as always to deceive us in the things we judge most certain and assured.
There's a certain kind of scepticism that can't bear uncertainty.
The only certainty is that nothing is certain.
Some people, both scientists and religious people, deal with uncertainty by being certain. That is dangerous in the fundamentalists and it is dangerous in the fundamentalist scientists.
Although our intellect always longs for clarity and certainty, our nature often finds uncertainty fascinating.
Doubt is not a pleasant condition, but certainty is absurd.
Our being is subject to all the chances of life. There are so many things we are capable of, that we could be or do. The potentialities are so great that we never, any of us, are more than one-fourth fulfilled.
In these matters the only certainty is that nothing is certain.
We can be absolutely certain only about things we do not understand.
To believe with certainty we must begin with doubting.